# US 2021/0243343 A1 · Terminal Device and Image Capturing Method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243343 A1 - Document ID: US20210243343A1 - Status: Published application - Kind: A1 - Application number: 17/053,235 - Filed: 2018-05-08 - Published: 2021-08-05 - Earliest claimed: 2018-05-08 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Inventors: Chang Liu - Web page: https://patentgrep.com/patent/US20210243343A1 ## CPC - H10K 59/60: OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - G06V 40/16: Human faces, e.g. facial parts, sketches or expressions - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED] - H04N 23/57: Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices - H04N 23/73: by influencing the exposure time - H04N 25/00: Circuitry of solid-state image sensors [SSIS]; Control thereof - H10K 59/40: OLEDs integrated with touch screens - H10K 59/65: OLEDs integrated with inorganic image sensors - H10K 59/805: {Electrodes} - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2360/14: Detecting light within display terminals, e.g. using a single or a plurality of photosensors - H10K 59/876: {comprising a resonant cavity structure, e.g. Bragg reflector pair} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - 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) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract In an embodiment, a terminal device includes a display unit having a display screen, and a light sensing unit located below the display unit and configured to sense incident light transmitted through the display screen. The display unit includes a transparent electrode, an opaque electrode, and an organic layer sandwiched between the two electrodes. The organic layer spontaneously emits light when a voltage difference is applied between the two electrodes. The second electrode has a semi-transparent area disposed corresponding to the light sensing unit and a remaining area which is an area of the second electrode except for the semi-transparent area. Also, an image capturing method is provided. ## Claims ### Claim 1 A terminal device, comprising: a display unit having a display screen and configured to display images on the display screen; and a light sensing unit located below the display unit and configured to sense incident light transmitted through the display screen; wherein the display unit comprises a display panel and the display panel comprises: a first electrode which is a transparent electrode; a second electrode which is an opaque electrode; and an organic layer sandwiched between the first electrode and the second electrode, wherein the organic layer spontaneously emits light when a voltage difference is applied between the first electrode and the second electrode, and wherein the second electrode has a semi-transparent area disposed corresponding to the light sensing unit and a remaining area which is an area of the second electrode except for the semi-transparent area. ### Claim 2 (depends on 1) The terminal device according to claim 1, wherein the semi-transparent area and the remaining area are distributed with metal particles, and concentration of the metal particles in the semi-transparent area is less than the concentration of the metal particles in the remaining area. ### Claim 3 (depends on 2) The terminal device according to claim 2, wherein a material of the metal particles distributed in the semi-transparent area is identical to the material of the metal particles distributed in the remaining area. ### Claim 4 (depends on 2) The terminal device according to claim 2, wherein a material of the metal particles distributed in the semi-transparent area is different from the material of the metal particles distributed in the remaining area. ### Claim 5 (depends on 1) The terminal device according to claim 1, wherein the remaining area is configured to totally reflect the incident light transmitted through the display screen, and the semi-transparent area is configured to partially reflect and partially transmit the light transmitted through the display screen. ### Claim 6 (depends on 1) The terminal device according to claim 1, wherein the semi-transparent area corresponds to a metal film, and transmittance and reflectance of the metal film are defined by a thickness of the metal film. ### Claim 7 (depends on 1) The terminal device according to claim 1, wherein an average voltage difference applied between the semi-transparent area and the first electrode is greater than the average voltage difference applied between the remaining area and the first electrode. ### Claim 8 (depends on 1) The terminal device according to claim 1, wherein the display unit further comprises a touch control electrode layer configured to detect touch operations and generate sensing signals correspondingly for determining a coordinate of at least one touched point or a gesture formed by the at least one touched point. ### Claim 9 (depends on 1) The terminal device according to claim 1, wherein the light sensing unit is located at a center of the display screen. ### Claim 10 (depends on 1) The terminal device according to claim 1, wherein the light sensing unit is carried by a front-facing camera. ### Claim 11 (depends on 10) The terminal device according to claim 10, wherein the front-facing camera is configured for face unlocking. ### Claim 12 (depends on 1) The terminal device according to claim 1, wherein the light sensing unit comprises a luminance color filter which comprises mono-color filter units. ### Claim 13 A terminal device, comprising: a display unit having a display screen and configured to display images on the display screen; a light sensing unit located below the display unit and configured to sense incident light transmitted through the display screen; and a timing control unit connecting to the display unit and the light sensing unit and configured to control a timing sequence in operating the light sensing unit and the display unit. ### Claim 14 (depends on 13) The terminal device according to claim 13, wherein the timing control unit is configured to control the light sensing unit to sense light intensity or capture at least one image while the display screen is turned off, and control the display unit to resume displaying the images after the light sensing unit completes in light sensing or image capturing. ### Claim 15 (depends on 13) The terminal device according to claim 13, wherein the light sensing unit comprises a shutter, and the timing control unit is configured to control the shutter to be opened for a predetermined period of time based on a vertical blanking interval (VBI) of a frame of the images displayed by the display unit. ### Claim 16 (depends on 15) The terminal device according to claim 15, wherein an open duration of the shutter overlaps with the VBI of the frame of the images displayed by the display unit. ### Claim 17 (depends on 15) The terminal device according to claim 15, wherein the at least one image is more than one image and the timing control unit is configured to control the shutter to be opened for more than one time at a predetermined time interval based on the VBIs of the frames of the images displayed by the display unit. ### Claim 18 (depends on 15) The terminal device according to claim 15, wherein the timing control unit is configured to control the light sensing unit to sense light intensity or capture the at least one image while the display screen is turned on. ### Claim 19 (depends on 13) The terminal device according to claim 13, wherein the light sensing unit comprises a camera and at least one of a luminance sensor or a proximity sensor. ### Claim 20 An image capturing method, applied to a terminal device comprising a display unit having a display screen, and a front-facing camera located below the display unit and configured to sense incident light transmitted through the display screen, the method comprising: using the display unit to display images; determining a vertical blanking interval (VBI) of a frame of at least one image displayed by the display unit; and controlling a shutter of the front-facing camera to be opened for a predetermined period of time based on the VBI of the frame of the at least one image displayed by the display unit to capture a scene in front of the terminal device as a captured image.