# US 2021/0240961 A1 · Display apparatus and driving method of display apparatus

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2021/0240961 A1
- Document ID: US20210240961A1
- Status: Published application
- Kind: A1
- Application number: 16/098,686
- Filed: 2018-03-06
- Published: 2021-08-05
- Earliest claimed: 2017-03-09
- Assignees: Boe Technology Group Co., Ltd.
- Applicants: Boe Technology Group Co., Ltd.
- Inventors: Jifeng TAN; Xiaochuan CHEN
- Web page: https://patentgrep.com/patent/US20210240961A1

## CPC

- G06V 40/1318: {using electro-optical elements or layers, e.g. electroluminescent sensing}
- G02B 30/27: involving lenticular arrays
- G02F 1/13312: {Circuits comprising photodetectors for purposes other than feedback}
- G02F 1/1347: Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
- G02F 1/29: for the control of the position or the direction of light beams, i.e. deflection
- G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED]
- G09G 3/3611: {Control of matrices with row and column drivers}
- H10K 59/50: OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
- H10K 59/60: OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- G02F 2201/16: series; tandem
- G02F 2201/44: Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers
- G09G 2300/023: Display panel composed of stacked panels
- H10K 59/126: Shielding, e.g. light-blocking means over the TFTs
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A display apparatus and a driving method thereof are provided. The display apparatus includes a display panel, a plurality of photosensitive sensors spaced from each other are in a display region of the display panel, an auxiliary panel is on a light emergent side of the display panel, the auxiliary panel has a plurality of light transmitting regions spaced from each other, a light shielding region is between the light transmitting regions adjacent to each other, and light from an object positioned above the auxiliary panel passes through the light transmitting regions and forms an image of the object on the photosensitive sensors.

## Claims

### Claim at position 1

1: A display apparatus, comprising a display panel, wherein a plurality of photosensitive sensors spaced from each other are in a display region of the display panel, an auxiliary panel is on a light emergent side of the display panel, the auxiliary panel has a plurality of light transmitting regions spaced from each other, a light shielding region is between the light transmitting regions adjacent to each other, and light from an object positioned above the auxiliary panel passes through the light transmitting regions and forms an image of the object on the photosensitive sensors.

### Claim at position 2 (depends on 1)

2: The display apparatus according to claim 1, further comprising a driving circuit, wherein the auxiliary panel includes a first transparent substrate and a second transparent substrate which face to each other, a liquid crystal material filled between the first transparent substrate and the second transparent substrate and a plurality of control electrodes spaced from each other, the driving circuit provides a first driving signal to the plurality of control electrodes, and the first driving signal enables the auxiliary panel to form the plurality of light transmitting regions spaced from each other.

### Claim at position 3 (depends on 2)

3: The display apparatus according to claim 2, wherein
the plurality of control electrodes are all on the first transparent substrate; or
the plurality of control electrodes are all on the second transparent substrate; or
a portion of the plurality of control electrodes are on the first transparent substrate, and the other portion of the plurality of control electrodes are on the second transparent substrate.

### Claim at position 4 (depends on 3)

4: The display apparatus according to claim 3, wherein
the plurality of control electrodes are on a surface of the first transparent substrate which faces the liquid crystal material and/or a surface of the second transparent substrate which faces the liquid crystal material.

### Claim at position 5 (depends on 3)

5: The display apparatus according to claim 3, wherein
in a case that the plurality of control electrodes are all on the first transparent substrate, any one of the plurality of control electrodes and its adjacent control electrode are respectively on two sides of the first transparent substrate; and
in a case that the plurality of control electrodes are all on the second transparent substrate, any one of the plurality of control electrodes and its control electrode are respectively on two sides of the second transparent substrate.

### Claim at position 6 (depends on 2)

6: The display apparatus according to claim 2, wherein the plurality of control electrodes are in multiple rows or the plurality of control electrodes are in multiple columns.

### Claim at position 7 (depends on 2)

7: The display apparatus according to claim 2, wherein the driving circuit provides a second driving signal to the plurality of control electrodes, and the second driving signal enables the auxiliary panel to form a grating or a lens with a light splitting function, so that the display apparatus implements a 3D (three dimensional) display.

### Claim at position 8 (depends on 1)

8: The display apparatus according to claim 1, wherein a length of the photosensitive sensor and a spacing between the light transmitting regions adjacent to each other meet the under-mentioned formula:
D1≥d;
where d represents the spacing between the light transmitting regions adjacent to each other, and D1 represents the length of the photosensitive sensor.

### Claim at position 9 (depends on 1)

9: The display apparatus according to claim 1, further comprising a backlight module, wherein
the backlight module is on a light incident side of the display panel, a plurality of sub-pixels and a black matrix around each of the plurality of sub-pixels are in the display region of the display panel, and each of the plurality of photosensitive sensors is provided in a region in which the black matrix is provided; and
the light from the object above the auxiliary panel is a light emitted by the backlight module, reaching the object and diffused by the object.

### Claim at position 10 (depends on 1)

10: The display apparatus according to claim 1, wherein
the display panel is an organic light emitting diode (OLED) display panel, electroluminescent elements of the OLED display panel and the plurality of photosensitive sensors are in a same layer, and each of the plurality of photosensitive sensors is between the electroluminescent elements adjacent to each other;
the display apparatus further comprising a polarizer between the display panel and the auxiliary panel; and
the light from the object above the auxiliary panel is a light emitted by the electroluminescent elements, reaching the object and diffused by the object.

### Claim at position 11 (depends on 10)

11: The display apparatus according to claim 10, further comprising another polarizer on a light emergent side of the auxiliary panel.

### Claim at position 12 (depends on 11)

12: The display apparatus according to claim 11, wherein
a light transmission axis of the another polarizer on the light emergent side of the auxiliary panel is in parallel to a light transmission axis of the polarizer between the display panel and the auxiliary panel.

### Claim at position 13 (depends on 7)

13: The display apparatus according to claim 7, wherein two auxiliary panels are sequentially arranged on the light emergent side of the display panel in a direction perpendicular to the display panel, the driving circuit respectively provides the first driving signal and the second driving signal to the plurality of control electrodes of the two auxiliary panels, so that the two auxiliary panels form orthogonally-superimposed lenses.

### Claim at position 14 (depends on 13)

14: The display apparatus according to claim 13, wherein
in the two auxiliary panels, an extension direction of the plurality of control electrodes of one auxiliary panel and an extension direction of the plurality of control electrodes of the other auxiliary panel are orthogonal with each other.

### Claim at position 15 (depends on 1)

15: The display apparatus according to claim 1, wherein
the light transmitting regions and the light shielding region are only alternatively arranged in a partial region, which overlaps a portion of the display region of the display panel, of the auxiliary panel.

### Claim at position 16 (depends on 1)

16: A driving method of a display apparatus, wherein the display apparatus is the display apparatus according to claim 1, and the driving method comprises:
providing a first driving signal to the auxiliary panel, so that the auxiliary panel forms the plurality of light transmitting regions spaced from each other and the light shielding region is formed between the light transmitting regions adjacent to each other;
providing another driving signal to the display panel, so that the display panel emits emergent light and the emergent light propagates to the object positioned above the auxiliary panel; and
receiving an electric signal sent out by the photosensitive sensors, and acquiring morphology of the object according to the electric signal.

### Claim at position 17 (depends on 16)

17: The driving method according to claim 16, further comprising:
providing a second driving signal to the auxiliary panel, so that the auxiliary panel forms a grating or a lens with a light splitting function, thereby enabling the display apparatus to implement a 3D display.

### Claim at position 18 (depends on 16)

18: The driving method according to claim 16, wherein two auxiliary panels are sequentially arranged on the light emergent side of the display panel in a direction perpendicular to the display panel, and the driving method further comprises:
in the two auxiliary panels, providing the first driving signal to one auxiliary panel, and providing a second driving signal to the other auxiliary panel, so that the two auxiliary panels form orthogonally-superimposed lenses.