# US 12,112,696 B2 · Light emitting display apparatus and substrate providing uniform brightness of different positions of setup region > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,112,696 B2 - Document ID: US12112696B2 - Status: Granted - Kind: B2 - Application number: 17/614,582 - Filed: 2020-11-27 - Published: 2023-08-17 - Granted: 2024-10-08 - Earliest claimed: 2020-11-27 - Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Pinchao Gu; Yao Huang; Tianyi Cheng; Yue Long; Yuanyou Qiu; Meng Li - Web page: https://patentgrep.com/patent/US12112696B2 ## CPC - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 3/3225: using an active matrix - H10K 59/121: characterised by the geometry or disposition of pixel elements - H10K 59/131: Interconnections, e.g. wiring lines or terminals - G09G 2300/0408: Integration of the drivers onto the display substrate - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2300/0861: with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes - G09G 2310/0248: Precharge or discharge of column electrodes before or after applying exact column voltages - G09G 2310/0264: Details of driving circuits - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - G09G 2320/043: Preventing or counteracting the effects of ageing - G09G 2370/00: Aspects of data communication - 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 substrate is provided with a setup region including an acquisition region and a transition region adjacent to the acquisition region. The display substrate includes: a base substrate; light emitting devices on the base substrate, at least a part of the light emitting devices are provided in each of the acquisition region and the transition region; and driving circuits on the base substrate, each of the driving circuits being configured to provide a driving signal to a corresponding light emitting device. A driving circuit corresponding to a light emitting device in the transition region is a first local driving circuit which is in the transition region. A driving circuit corresponding to a light emitting device in the acquisition region is a peripheral driving circuit which is in the transition region and is connected to the corresponding light emitting device in the acquisition region through a connection line. ## Claims ### Claim 1 A display substrate, comprising a setup region having an acquisition region for an image acquisition unit arranged at a side of the display substrate away from a display side and a transition region adjacent to the acquisition region, wherein the display substrate comprises: a base substrate; a plurality of light emitting devices on the base substrate, wherein at least a part of the plurality of light emitting devices are provided at each of the acquisition region and the transition region; and a plurality of driving circuits on the base substrate, each of which comprises a driving transistor and is configured to provide a driving signal to a corresponding light emitting device; wherein driving circuits of the plurality of driving circuits corresponding to light emitting devices in the transition region are referred to as first local driving circuits which are located in the transition region; driving circuits of the plurality of driving circuits corresponding to light emitting devices in the acquisition region are referred to as peripheral driving circuits which are located in the transition region and are connected to the light emitting devices through connection lines, respectively; and at least a part of the connection lines each comprise: a connection portion between a corresponding light emitting device and a corresponding peripheral driving circuit, and an extension portion connected to the connection portion, and the connection lines are uniformly distributed in the setup region; and wherein the transition region comprises at least one sub-transition region outside the acquisition region on at least one side of the acquisition region in a first direction; and the connection line connected to the peripheral driving circuit in each of the at least one sub-transition region extends into the acquisition region at least from a position in the sub-transition region farthest from the acquisition region. ### Claim 2 (depends on 1) The display substrate of claim 1, wherein the display substrate further comprises a display region adjacent to the setup region; at least a part of the plurality of light emitting devices are provided in the display region; driving circuits corresponding to the light emitting devices in the display region are referred to as second local driving circuits which are located in the display region; and a distribution density of the light emitting devices in the setup region is smaller than a distribution density of the light emitting devices in the display region. ### Claim 3 (depends on 1) The display substrate of claim 1, wherein a distribution density of the light emitting devices in the acquisition region is identical to a distribution density of the light emitting devices in the transition region. ### Claim 4 (depends on 1) The display substrate of claim 1, wherein each of the connection lines is made of a transparent conductive material. ### Claim 5 (depends on 1) The display substrate of claim 1, wherein each of the plurality light emitting devices is an organic light emitting diode. ### Claim 6 (depends on 1) The display substrate of claim 1, wherein the transition region comprises two sub-transition regions outside the acquisition region on two respective sides of the acquisition region in the first direction. ### Claim 7 (depends on 6) The display substrate of claim 6, wherein the peripheral driving circuit corresponding to the light emitting device in the acquisition region on each side of a middle demarcation line position in the first direction is located in the sub-transition region which is on the same side of the acquisition region as the peripheral driving circuit in the first direction; and the middle demarcation line position is a position at a middle of the acquisition region in the first direction; and the connection line connected to the peripheral driving circuit in each of the sub-transition regions extends at least from a position in the sub-transition region farthest from the acquisition region to the middle demarcation line position of the acquisition region. ### Claim 8 (depends on 1) The display substrate of claim 1, wherein the acquisition region is of a rectangle, and two sides of the rectangle of the acquisition region are parallel to the first direction; and each of the at least one sub-transition region is of a rectangle, and two sides of the rectangle of the sub-transition region are parallel to the first direction. ### Claim 9 (depends on 8) The display substrate of claim 8, wherein the connection line connected to the peripheral driving circuit in each of the sub-transition regions is parallel to the first direction. ### Claim 10 (depends on 9) The display substrate of claim 9, wherein in a second direction perpendicular to the first direction, the connection lines are uniformly distributed in the setup region. ### Claim 11 (depends on 9) The display substrate of claim 9, wherein the driving circuits comprise output terminals configured to output the driving signals, respectively; the driving circuits in each of the sub-transition regions are arranged in a plurality of rows parallel to the first direction; and the output terminals of the driving circuits in a same row are arranged in a straight line parallel to the first direction; leading out structures are provided to correspond to the peripheral driving circuits, respectively; at least one insulating layer is provided between the leading out structures and the output terminals, and the leading out structure is connected to the output terminal of the peripheral driving circuit through a first via hole; at least one insulating layer is provided between the connection line and the output terminal; at least one insulating layer is provided between the connection line and the leading out structure; and the connection line is connected to the leading out structure through a second via hole; and every two different second via holes are located at different positions in the second direction perpendicular to the first direction. ### Claim 12 (depends on 11) The display substrate of claim 11, wherein the driving circuits in each row comprise multiple first local driving circuits and multiple peripheral driving circuits; and the multiple first local driving circuits and the multiple peripheral driving circuits in the same row are mixed to be arranged in the first direction. ### Claim 13 (depends on 11) The display substrate of claim 11, wherein the leading out structures have a same shape. ### Claim 14 (depends on 11) The display substrate of claim 11, wherein the light emitting device comprises a first electrode; the leading out structure and the first electrode are in a same layer; a corresponding connection line is connected to the first electrode of the light emitting device through a third through hole; and the output terminal of the first local driving circuit is connected to the first electrode of the light emitting device through a fourth via hole. ### Claim 15 (depends on 14) The display substrate of claim 14, wherein a shape of the leading out structure corresponding to each of the peripheral driving circuits is the same as a shape of the first electrode of the light emitting device corresponding to the peripheral driving circuit. ### Claim 16 (depends on 14) The display substrate of claim 14, wherein a first planarization layer is provided on a side of the output terminal of the driving circuit away from the base substrate; the connection line is provided on a side of the first planarization layer away from the base substrate; a second planarization layer is provided on a side of the connection line away from the base substrate; the leading out structure and the first electrode are provided on a side of the second planarization layer away from the base substrate; the first via hole and the fourth via hole are in the first planarization layer and in the second planarization layer; and the second via hole and the third via hole are in the second planarization layer. ### Claim 17 (depends on 1) A display panel, comprising: the display substrate of claim 1. ### Claim 18 (depends on 17) A display apparatus, comprising: the display panel of claim 17; and the image acquisition unit on a side of the display panel and at a position corresponding to the acquisition region of the display substrate. ### Claim 19 (depends on 18) The display apparatus of claim 18, wherein the display apparatus is a full screen display apparatus.