Display apparatus including transmissive light source

Patent metadata

Field	Value
Publication number	US-11353733-B2
Application number	US-201916550120-A
Country	US
Kind code	B2
Filing date	Aug 23, 2019
Priority date	Dec 28, 2018
Publication date	Jun 7, 2022
Grant date	Jun 7, 2022

Abstract

A display apparatus comprises a display panel including a pixel area in which a plurality of pixels is disposed and a peripheral area outside the pixel area; a transmissive light source disposed in a first area of the pixel area; and a timing controller which controls the transmissive light source not to emit light when pixels disposed corresponding to the first area of the pixel area among the plurality of pixels are present in at least one of an image data input period and a pixel light emission period.

First claim

What is claimed is:

1. A display apparatus comprising:
a display panel including a pixel area in which a plurality of pixels is disposed and a peripheral area outside the pixel area;
a transmissive light source disposed on a rear surface of the display panel; and
a timing controller which controls the transmissive light source and the plurality of pixels,
wherein each of the plurality of pixels comprises an electroluminescent element that emits light for displaying an image,
wherein the transmissive light source is an infrared light source configured to be included in at least one of a proximity sensor, an illuminance sensor, and a face recognition sensor,
wherein the pixel area is divided into a first area which overlaps with the transmissive light source and a second area which is an area except for the first area,
wherein the timing controller controls an image data input period and a pixel light emission period of a plurality of pixels disposed in the first area not to overlap with a light emission period of the transmissive light source, and
wherein the timing controller controls an image data input period and a pixel light emission period of a plurality of pixels disposed in the second area to overlap with the light emission period of the transmissive light source.

2. The display apparatus of claim 1 , wherein the second area is an area through which the light is not emitted by the transmissive light source is transmitted.

3. The display apparatus of claim 1 , wherein each of the plurality of pixels further comprises:
a first transistor for switching supply of image data;
a driving transistor configured to supply a predetermined current corresponding to the supplied image data to the electroluminescent element; and
a second transistor for switching supply of a high potential voltage supplied to the driving transistor.

4. The display apparatus of claim 3 , wherein at least one of the first transistor, the second transistor, and the driving transistor includes a semiconductor material having electrical characteristics varied by the light emitted by the transmissive light source.

5. The display apparatus of claim 3 , wherein the display panel comprises:
a first scan line configured to switch the first transistor;
a data line configured to supply the image data to the driving transistor through the first transistor;
a second scan line configured to switch the second transistor; and
a high-potential power supply line electrically connected to the second transistor, which are electrically connected with the one pixel.

6. The display apparatus of claim 5 , wherein the image data input period is a period where the first scan line is turned on and the image data is applied to a gate electrode of the driving transistor, and
wherein the pixel light emission period is a period where the second scan line is turned on, the second transistor is turned on, and the electroluminescent element emits the light by the current supplied through the drive transistor.

7. The display apparatus of claim 1 , wherein the pixels disposed in the first area among the plurality of pixels include a transparent material so that the light emitted by the transmissive light source is transmitted.

Assignees

• Lg Display Co Ltd

Inventors

• Lee Junghoon
• Gong Namyong

Classifications

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/70 Primary

  OLEDs integrated with inorganic light-emitting elements, e.g. with inorganic electroluminescent elements · CPC title

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title