Nichia Corporation

Yoshifumi Nagai

Kunihiro Izuno

Yuichi Fujiwara

Ryuhei Tsuji

Yoshiyuki Nakano

A light emitting device and display apparatus using a plurality of light emitting devices can drastically reduce contrast loss due to light from an external source. The light emitting device has a light emitting chip(s) and a first layer covering the light emitting chip(s). A second layer including a light scattering material is provided at least over the first layer, and the surface of the second layer has a plurality of protrusions which follow the topology of the light scattering material. The display apparatus is formed by disposing these light emitting devices in an array on a substrate.

Light emitting device, display apparatus with an array of light emitting devices, and display apparatus method of manufacture

A light emitting device and display apparatus using a plurality of light emitting devices can drastically reduce contrast loss due to light from an external source. The light emitting device has a light emitting chip(s) and a first layer covering the light emitting chip(s). A second layer includng a light scattering material is provided at least over the first layer, andthe surface of the second layer has a plurality of protrusions which follow the topology of the light scattering material. The display apparatus is formed by disposing these light emitting devices in an array on a substrate.

Each horizontal driving section and a driving control section of a display apparatus have a data communicating function. The driving control section has a first communicating section receiving data from an external device and a second communicating section communicating data with each horizontal driving section. The second communicating section adds individual identification information for identifying each horizontal driving section to the transferred data, and transfers the data in packet format. The horizontal driving section receives the data packet for it based on the identification information, and performs current driving for a display section. The driving control section adds the individual identification information to the control data to be transferred to each horizontal driving section corresponding to connecting form of the horizontal driving sections, and transfers the control data not concerned with connecting order of the horizontal driving sections. The horizontal driving section side performs a receiving process and lighting operation.

Display and display drive circuit or display drive method

A driving circuit in a display apparatus includes a current driving unit for supplying a driving current in a forward direction to a light emitting element based on control data. The current driving unit is furnished with a function of supplying a predetermined current in a reverse direction to the light emitting element. The driving circuit further includes a voltage comparing unit for judging whether a reverse voltage necessary to supply the predetermined current in the reverse direction is smaller than a predetermined voltage. The driving circuit notifies an abnormal condition of the light emitting element based on a judgment by the voltage comparing unit. Consequently, it is possible to detect a light emitting element generating a leak current in a reverse direction of the light emitting element even when the light emitting element is connected to the driving circuit.

Drive circuit of display and display

A light emitting device and display apparatus using a plurality of light emitting devices can drastically reduce contrast loss due to light from an external source. The light emitting device has (a) light emitting chip(s) and a first layer covering the light emitting chip(s). A second layer including a light scattering material is provided at least over the first layer, and the surface of second layer has a plurality of protrusions which follow the topology of the light scattering material. The display apparatus is formed by disposing these light emitting devices in an array on a substrate.

A light emitting device and display apparatus using a plurality of light emitting devices can drastically reduce contrast loss due to light from an external source. The light emitting device has (a) light emitting chip(s) and a first layer covering the light emitting chip(s). A second layer including a light scattering material Is provided at least over the first layer, and the surface of second layer has a plurality of protrusions which follow the topology of the light scattering material. The display apparatus is formed by disposing these light emitting devices In an array on a substrate.

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Anan, Japan

Yoshifumi Nagai