Chunghwa Picture Tubes, Ltd.

Au Optronics Corporation

Chun-Hsien Yeh

Hsing-Yao Chen

Kuan-Yu Chen

Jen-Chieh Chen

Hsiao-Chung Cheng

Chen-Lun Chiu

Chung-Ming Shen

Chia-Yang Cheng

Kuo-Cheng Chen

Chien-Feng Chiu

Hsiang-Lin Chang

Der-Jyh Chang

Yung-Yi Chen

Yu-Kun Ma

Hsiang-Sung Lee

Chi-Tsan Wang

Shung-Lin Chang

A pixel structure including a first data line, a first sub-pixel, and a second sub-pixel is disclosed. The first sub-pixel includes a first transistor and a first pixel electrode. A first end and a second end of the first transistor are connected to a first data line and the first pixel electrode, respectively. A distance between the first end and the first data line is less than a first width of the first pixel electrode. The second sub-pixel includes a second transistor and a second pixel electrode. A first end and a second end of the second transistor are connected to the first data line and the second pixel electrode, respectively. The first sub-pixel is disposed between the second sub-pixel and the first data line, and a distance between the first end of the second transistor and the first data line is less than the first width.

Display and pixel structure thereof

A naked-eye type stereoscopic display including a display panel, a polarization switching panel, and a lens array is provided. The display panel provides an image having a first polarization state. The polarization switching panel and the lens array are disposed on a propagation path of the image, and the polarization switching panel is located between the lens array and the display panel. In addition, the polarization switching panel has at least one rescue line so as to lower the scrap rate of the polarization switching panel.

Naked-eye type stereoscopic display

An inline electron gun for use in a multi-beam electron gun as in a color cathode ray tube (CRT) includes a main focus lens for focusing the electron beams on the CRT's display screen for providing a video image. The main focus lens includes plural charged grids aligned in a spaced manner along the electron gun's longitudinal axis through which plural (typically three) electron beams are directed. One or more of these charged grids includes at least two aligned common apertures for passing the three electron beams. The layered common aperture arrangement allows for increasing the length of the electron gun as well as the effective diameter of the electron gun's main focus lens for improved video image resolution without introducing electron beam astigmatism.

Multi-layer common lens arrangement for main focus lens of multi-beam electron gun

A multi-beam color index cathode ray tube (CRT) includes vertically spaced, horizontal phosphor stripes on the inner surface of its display screen. The parallel phosphor bands are arranged in groups of three, with each phosphor stripe in a group providing a respective one of the three primary colors of red, green and blue. An electron gun directs three electron beams onto the display screen, with the three electron beams deflected over the display screen in unison in a raster pattern. The three electron beams are focused in the form of three spots on the display screen, with each spot coincident with a respective horizontal phosphor stripe of a given color. The intensity of each electron beam is independently modulated as it sweeps across the width of the display screen by a respective color video signal in accordance with the displayed image. The three electron beams are each provided with a horizontally elongated cross section, with convergence of the beams provided by a plurality of multi-pole adjustable magnets. By horizontally elongating and vertically offsetting the beams, the vertical spacing between the electron beams as well as between the horizontal phosphor stripes may be reduced for improved video image resolution. The closely spaced electron beams may be focused with a conventional main focusing lens employing a common beam-passing aperture, with electron beam alignment with the horizontal phosphor stripes provided via a beam responsive UV emitter/sensor combination and feedback control arrangement.

Multi-beam index CRT with horizontal phosphor lines

For use in a beam index color cathode ray tube (CRT), a multi-beam group electron gun directs first and second groups of vertically aligned electron beams on respective parallel, horizontally aligned color phosphor stripes on the CRT's display screen. Each group of electron beams includes three beams, one for each of the three primary colors of red, green and blue. The first and second electron beam groups are horizontally offset from one another, with the upper, intermediate and lower electron beams in each group tracing the same horizontal phosphor stripe as the beams scan the display screen and with a time delay provided to synchronize the video information of both electron beam groups. A color video signal is provided either to a respective cathode or to a respective segmented conductive portion containing a beam passing aperture in the electron gun's G control grid for individually modulating each beam with color video image information.

Multi-beam group electron gun for beam index CRT

To prevent rotation of a generally flat, or planar, grid having three inline beam passing apertures, where the two outer apertures are asymmetric in shape, during assembly of a multi-beam electron gun for use in a color cathode ray tube (CRT), an electron gun alignment jig having three inline generally cylindrical mandrels in combination with a generally flat spacer plate is used. Each of the three mandrels is inserted in a respective grid aperture and the grid is placed in contact with the flat spacer plate. The flat spacer plate includes a recessed portion with an alignment slot. The grid includes a lateral alignment tab adapted for insertion in the spacer plate's matching alignment slot in a tight-fitting manner. With the alignment tab inserted in the alignment slot, the three inline apertures are in precise alignment in the alignment jig and grid rotation is prevented to facilitate electron gun assembly. Also to assist in grid alignment during electron gun assembly, a grid positioning jig includes a pair of spaced movable gripping elements each adapted to securely engage a respective lateral edge of the grid for positioning the grid in the electron gun assembly jig. In one embodiment, the positioning jig includes first and second spaced, inwardly urged gripping elements adapted for insertion in respective recessed portions, or notches, in opposed lateral edges of the grid. Apparatus for attaching the grid to the positioning jig includes a movable member in a mandrel for engaging the grid adjacent an asymmetric aperture.

Alignment of asymmetric apertured grids for electron gun assembly

An internal resistor within a color cathode ray tube (CRT) is connected to a voltage source and is coupled across a G4 grid and a G6 grid of the CRT's multi-grid quadrupole (QPF) electron gun. De-coupling the G4 grid from the G2 grid in the electron gun's prefocus lens and operating the G4 grid at a higher voltage as used in the gun's high voltage main focus lens moves the equivalent lens of the prefocus and main focus lenses toward the CRT's display screen and reduces electron beam magnification and spot size for improved video image definition and focusing.

QPF electron gun with high G4 voltage using internal resistor

In a cathode ray tube (CRT) having a glass envelope with a neck portion, a funnel portion and a display screen, or front panel, an electron gun disposed in the CRT's neck portion has a plurality of aligned electrodes, including a charged shield cup. The shield cup includes a plurality of contact springs disposed about the outer periphery thereof and engaging a conductive layer on the inner surface of the CRT's neck portion for supporting the electron gun and charging the shield cup to an electron accelerating, or anode, voltage. Also disposed on the outer periphery of the shield cup and engaging the inner conductive layer is a getter support member. To provide a zero resultant force applied to the shield cup by the three contact springs and the getter support member and maintain the electron gun coaxial with the CRT's centerline, the thickness or strength of the contact springs is established such that the resultant force of the contact springs on the shield cup provides a reaction force to, and compensates for, the force exerted by the getter support member on the shield cup.

Electron gun support and positioning arrangement in a CRT

An inline electron gun for a color cathode ray tube (CRT) directs electron beams through an Einzel lens common to all of the beams for focusing the beams on a display screen across which the beams are scanned in horizontal scan lines in a raster-like manner. The electron gun includes a beam forming region (BFR) for forming the beams in a matrix array including a plurality of vertically spaced, horizontally aligned apertures, where each horizontally aligned group of apertures passes the primary color electron beams for one scan line on the display screen and vertically aligned apertures are grouped to pass common color electron beams which are horizontally deflected in synchronism over adjacent, vertically spaced scan lines on the display screen. All of the electron beams converge and cross over the electron gun's axis at the center of the Einzel lens, with the diverging beams then directed through a convergence arrangement which converges each group of the horizontally aligned beams to a common spot on a given scan line permitting video display information to be presented simultaneously on more than one scan line. The beam convergence arrangement equalizes the vertical and horizontal convergence effects on each of the beams in the matrix array of beams to deflect the outer beams inwardly while deflecting the upper and lower beams respectively downwardly and upwardly so that each group of horizontally aligned beams converge on the center beam of that group at the display screen.

Growing community of inventors

Taipei, Taiwan

Chun-Hsien Yeh