Samsung Electronics Co., Ltd.

Lg Electronics Inc.

Yonsei University

Yunpyo Hong

Yohan Lee

Dongkyoon Han

Jong-Kon Bae

Hojin Kim

Jaeho Lee

Soyoung Lee

Jongkon Bae

Seungkyu Choi

Jaesung Lee

Donghyun Yeom

Jungchul An

Donghwy Kim

Hanyuool Kim

Jihyun Ahn

Taehyeong Kim

Hyunjun Park

Seongmin Cheon

Hyungjin Kim

Taekyoung Kim

Jongwu Baek

Jiyong Kim

Jinhyun Kim

Jungho Ahn

Byungduk Yang

Hyesoon Jeong

Jaeseok Kim

Jungyu Lee

Jungbae Bae

Hongkook Lee

Donghui Kim

SungHyun Kim

Duhyun Kim

Sangwoo Bae

Minhwan Seo

Sungmin Ahn

Young Jo Kim

Wondon Joo

Younghee Ha

Youngkyung Park

Euntaek Jang

Sangseol Lee

Minseung Kim

Eunsook Seo

Ilyong Lee

Jiyoung Chu

Woonki Park

Mingu Lee

Juwon Byun

Namseoung Lee

Dongyoon Koo

Hyeonggyun Cheong

Huijae Kim

Euisun Choi

Youngil Yoon

Jihoon Jeon

A chip bonding apparatus, includes: a body; a substrate conveyor installed on the body to transfer a substrate; a bonding head conveyor disposed on an upper surface of the body; an alignment unit installed on the body and adjusting a position of the substrate and a position of a chip; and a bonding head installed in the bonding head conveyor and moved and attaching a chip therebelow, wherein the bonding head is provided with a chip bonding unit for attaching the chip in a lower end portion thereof, wherein the chip bonding unit, includes: a chip bonding unit body having an installation groove formed therein; a pushing module having one end portion inserted in the installation groove; and an attachment module having a deformable member deformed by the pushing module; wherein the deformable member is provided with a deformable portion which is deformed by being pressed by the pushing module, and having a bottom surface in contact and exerting a force on the chip to bond the chip to the substrate.

Apparatus for bonding chip band and method for bonding chip using the same

A method of bonding a die to a wafer using a die bonding system measures, using an obtained image showing interference fringes, a parallelism between the die and the wafer. In some embodiments, parallelism and die deformation are detected using interference fringes produced by an optical apparatus of the die bonding system. A parallelism measurement optical apparatus includes a light source, an optical assembly configured to control polarization of a reference light and a measurement light. In some embodiments, the measurement light is sequentially incident on and reflected from a first measurement surface and a second measurement surface that are spaced apart along a vertical direction to face each other, and is emitted to have information on parallelism between the first and second measurement surfaces. In some embodiments, a first polarizer is configured to interfere the reference light and the measurement light emitted from the optical assembly with each other. A light detector is configured to detect an interference signal of lights including the interference fringes.

Optical assembly for parallelism measurement, optical apparatus including the same, die bonding system and die bonding method using the same

A display driving integrated circuit performs an adaptive frame operation. An operation method of the display driving integrated circuit includes outputting current frame data to an external display panel, starting to receive next frame data from an external device after a first time point, the first time point being a time point when a first time period elapses, the first time period immediately following a second time point at which the current frame data are completely output, and generating a vertical synchronization signal at a third time point synchronized with a cycle of an emission control signal, in response to starting to receive the next frame data.

Display driving integrated circuit configured to perform adaptive frame operation and operation method thereof

An electronic device with a rollable display may include the operations of: obtaining global burn-in information and local burn-in information according to a designated sampling period; on the basis of the result of analyzing the global burn-in information, predicting whether burn-in will at least partially occur in the entire area of a display area; when burn-in is predicted to at least partially occur in a boundary area, generating a first compensation map including pieces of local compensation data calculated to correspond to m block areas of the boundary area, respectively; when burn-in is predicted to at least partially occur in an area remaining after excluding the boundary area from the entire area, generating a second compensation map including pieces of global compensation data calculated to correspond to n block areas of the entire area, respectively; and controlling the rollable display to display image data compensated on the basis of the first compensation map or the second compensation map.

Electronic device and method for predicting and compensating for burn-in of display

An electronic device is disclosed that includes a display, a display driver IC that drives the display, and at least one processor operationally connected with the display and the display driver IC. The display driver IC moves a display location of one or more pixel data corresponding to an image associated with at least one application from a specified point by a specified distance on an active area of the display. The at least one processor is configured to scale up a first portion of the image by a specified range based on the specified distance, scale down a second portion of the image by the specified range based on the specified distance, and display the image on the active area based on the scaled-up first portion or the scaled-down second portion. In addition, various embodiments recognized through the specification are possible.

Electronic device for controlling display position or area of image on basis of change of content of image

An electronic device according to various embodiments may include a display panel, a Display Driving Integrated Circuit (DDIC) operatively coupled to the display panel, and a processor operatively coupled to the DDIC. The DDIC may be configured to receive, from the processor, a signal indicating that a first resolution is to be converted to a second resolution while displaying an image at the first resolution through the display panel, based on a horizontal synchronization signal including a first porch interval, change a length of the porch interval in response to the reception, and display the image at the second resolution through the display panel, based on the horizontal synchronization signal including the porch interval having the changed length.

Electronic device and method for extending time interval during which upscaling is performed on basis of horizontal synchronization signal

Disclosed is an electronic device including a display panel displaying an image, a source driver supplying a source voltage to the display panel, and a display driver integrated circuit (DDI) including a timing controller controlling the source driver. The timing controller may be configured to identify information associated with a luminance of the image and to set a source bias current for controlling a slew rate of the source voltage based on the luminance of the image. Besides, various embodiments as understood from the specification are also possible.

Electronic device for controlling voltage slew rate of source driver on basis of luminance

An electronic device according to various embodiments may comprise: a display; a processor; a memory; and a display drive circuit for driving the display panel, wherein the display drive circuit is configured to: receive first frame data including at least a part of a second content from the processor while a first content is displayed using the display panel; keep from storing the received first frame data in the memory at least temporarily for a designated period of time; receive second frame data including at least a part of the second content from the processor after the designated period of time; store the received second frame data in the memory; and display the second content on the display panel according to the second frame data.

Electronic device and method for controlling storage of content displayed on display panel

Disclosed is an electronic device comprising at least one sensor, a communication circuit, a display, and at least one processor operationally connected to the display, wherein the at least one processor is configured to: display, on the display, a watch screen including a fixed element displayed at a designated location on the display, a repetitive element displayed on the basis of at least a designated rule, and a changing element associated with information obtained through the at least one sensor or received through the communication circuit; generate first data on the basis of at least one of the designated rule or the shape of the repetitive element; generate second data based on at least one of the fixed element or the changing element, in response to the changing element changing from a first value to a second value; and generate first deterioration information on the basis of the first data, the second data, and the duration over which the changing element maintains the first value. Various other embodiments understood through the specification are also possible.

Method for calculating degree of degradation on basis of properties of image displayed on display and electronic device for implementing same

An electronic device according to various embodiments may comprise a display panel, a processor, and a display driver circuit including an internal memory and configured to drive the display panel, wherein the display driver circuit may be configured to: receive, from the processor, movement information of a designated content to be displayed on the display panel while the processor operates in a low power state; store the movement information in the internal memory; display the designated content at a first position on the display panel while the processor operates in the low power state; and move the designated content displayed at the first position to a second position on the display panel and display the same at the second position, at least on the basis of the movement information stored in the internal memory while the processor operates in the low power state.

Electronic device and method for moving content display position on basis of coordinate information stored in display driver circuit

According to various embodiments of the disclosure, a display may include a display panel including a first region in which first group subpixels are disposed and a second region in which second group subpixels are disposed, a converter group including converters respectively connected to subpixels included in the first group subpixels and the second group subpixels to transfer image data for output of specified content to the subpixels, a first group gamma circuit selectively connected to the converters to output a first grayscale voltage whose intensity is determined based on a plurality of binary bits, a second group gamma circuit selectively connected to the subpixels to output a second grayscale voltage whose intensity is determined based on a single binary bit, and a controller that controls selective connections between the first group gamma circuit and the converters and selective connections between the second group gamma circuit and the subpixels. According to an embodiment, the controller may receive the image data from an external processor and transfer the image data to the converter group, connect the first group gamma circuit with at least some converters such that the first group gamma circuit applies the first grayscale voltage to the at least some converters of the converter group, connect the second group gamma circuit with the second group subpixels such that the second group gamma circuit applies the second grayscale voltage to the second group subpixels, and output the specified content to at least a portion of the first region. In addition, various embodiments understood from the specification are possible.

Display for controlling operation of gamma block on basis of indication of content, and electronic device comprising said display

Disclosed is an electronic device including a display panel, an oscillator generating a clock signal, a display driving integrated circuit (DDI) generating first time information, using the clock signal, a sensor, and at least one processor identifying a variable measured by using the sensor or second time information corresponding to a reference time. The at least one processor is configured to measure a variable, using the sensor, to correct an error time between the first time information and second time information corresponding to a reference time, based on the variable, and to deliver the corrected error time or the second time information to the DDI such that the DDI corrects the first time information based on the corrected error time to display a screen of the display panel. Besides, various embodiments as understood from the specification are also possible.

Electronic device including display driving circuit for displaying corrected time information on basis of temperature information

An electronic device according to an embodiment of the present invention comprises: a housing; a display panel disposed inside the housing; a display driver circuit electrically connected to the display panel; and a processor for generating a background image output through the display panel to transmit the same to the display driver circuit.

Display driver circuit for synchronizing output timing of images in low power state

An electronic device is provided. The electronic device includes a display panel on which a plurality of pixels are arranged, first group lines providing a source voltage to each of the plurality of pixels, a display driver integrated circuit that includes a plurality of source amplifiers electrically connected with the first group lines and providing the source voltage to each of the plurality of pixels, at least one sensing line crossing the first group lines, and first group switches disposed on the at least one sensing line, and a sensing circuit electrically connected with one end of the at least one sensing line to check a crack in at least a partial region of the electronic device. The display driver integrated circuit receives a specified signal for the electronic device to enter a sense mode, applies a first voltage to the other end of the at least one sensing line that is distinguished from the one end of the at least one sensing line, in response to the received specified signal, turns on the first group switches such that the at least one sensing line is short-circuited from the other end of the at least one sensing line to the sensing circuit, obtains a second voltage sensed by the sensing circuit electrically connected with the one end of the at least one sensing line, and checks information regarding the crack in the at least partial region of the electronic device based on a difference between the first voltage and the second voltage. In addition to the above, various embodiments identified through the specification are possible.

Method for checking crack in display and electronic device for performing same

Growing community of inventors

Gyeonggi-do, South Korea

Yunpyo Hong