# US 11,442,308 B2 · Display device having through hole section for image acquisition and image display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,442,308 B2 - Document ID: US11442308B2 - Status: Granted - Kind: B2 - Application number: 16/770,051 - Filed: 2020-03-27 - Published: 2022-04-14 - Granted: 2022-09-13 - Earliest claimed: 2020-03-02 - Assignees: Wuhan China Star Optoelectronics Technology Co., Ltd. - Applicants: Wuhan China Star Optoelectronics Technology Co., Ltd. - Inventors: Peng Zhang; Guanghui Liu; Chao Wang - Web page: https://patentgrep.com/patent/US11442308B2 ## CPC - G02F 1/13312: {Circuits comprising photodetectors for purposes other than feedback} - G02F 1/133603: {with LEDs} - G02F 1/133514: {Colour filters} - G02F 1/133524: {Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides} - G02F 1/133528: {Polarisers} - G02F 1/133626: {providing two modes of illumination, e.g. day-night} - H04N 23/51: Housings - H04N 23/56: provided with illuminating means - H04N 23/57: Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices - 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 - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A display device is provided, including a backlight module, a liquid crystal cell, a light guide body, a light-emitting unit, and a camera unit. The backlight module includes a backlight section and a through hole section, and the backlight section surrounds at least a portion of the through hole section. The liquid crystal cell is disposed on the backlight module. The light guide body is disposed in the through hole section. The light-emitting unit is disposed on a light incident surface of the light guide body. The camera unit is disposed on a first surface of the light guide body. The display device and a corresponding part of an opening area cannot display an image correctly, which is prevented. ## Claims ### Claim 1 A display device, comprising: a backlight module comprising a backlight section and a through hole section, wherein the backlight section surrounds at least a portion of the through hole section; a liquid crystal cell disposed on the backlight module; a light guide body disposed in the through hole section; a light-emitting unit disposed on a light incident surface of the light guide body; a camera unit disposed on a first surface of the light guide body; a controller electrically connected to the light-emitting unit and the camera unit, wherein the controller is configured to control the camera unit to be turned off in response to the light-emitting unit being turned on, and the controller is configured to control the light-emitting unit to be turned off in response to the camera unit being turned on. ### Claim 2 (depends on 1) The display device as claimed in claim 1, wherein at least a part of the camera unit is embedded in the light guide body, or at least a part of the camera unit is near the light guide body. ### Claim 3 (depends on 1) The display device as claimed in claim 1, further comprising a support member disposed away from the backlight module, and the support member supports the light-emitting unit and/or the light guide body. ### Claim 4 (depends on 3) The display device as claimed in claim 3, wherein the support member comprises a support plate and a support frame, or a fixed frame and a clamp. ### Claim 5 (depends on 1) The display device as claimed in claim 1, wherein the light-emitting unit comprises a miniature light-emitting diode (mini-LED) unit, a micro-LED unit, and a frame lamp light-emitting unit. ### Claim 6 (depends on 1) The display device as claimed in claim 1, wherein the light guide body is a solid structure. ### Claim 7 (depends on 6) The display device as claimed in claim 6, wherein material of the light guide body comprises at least one of polycarbonate, polymeric methyl methacrylate, and tempered glass. ### Claim 8 (depends on 1) The display device as claimed in claim 1, wherein a shape of the light guide body comprises a cylinder and a polygon. ### Claim 9 (depends on 1) The display device as claimed in claim 1, wherein the liquid crystal cell comprises a first polarizer, an array substrate, a liquid crystal layer, a color filter substrate, and a second polarizer. ### Claim 10 (depends on 9) The display device as claimed in claim 9, wherein portions of the first polarizer and the second polarizer corresponding to the through hole section are hollow, and the first polarizer and the second polarizer are configured to receive light from an external environment, and to receive light emitted by the light-emitting unit through the light guide body. ### Claim 11 A display device, comprising: a backlight module comprising a backlight section and a through hole section, wherein the backlight section surrounds at least a portion of the through hole section; a liquid crystal cell disposed on the backlight module; a light guide body disposed in the through hole section; a light-emitting unit disposed on a light incident surface of the light guide body; a camera unit disposed on a first surface of the light guide body; wherein the light guide body comprises: a main body comprising a first surface and a second surface, wherein the first surface is disposed away from the liquid crystal cell and corresponds to a hollow section of a first polarizer of the liquid crystal cell, and the first surface is configured to transmit light from an external environment toward a portion of the liquid crystal cell corresponding to the through hole section; and the second surface is disposed opposite to the first surface, and is configured to transmit light emitted from the light-emitting unit or the light from the external environment toward the portion of the liquid crystal cell corresponding to the through hole section; and a coupling portion connected to the main body and comprising at least one light incident surface, wherein the coupling portion is disposed correspondingly to a light-exiting surface of the light-emitting unit, and is configured to transmit the light emitted by the light-emitting unit. ### Claim 12 (depends on 11) The display device as claimed in claim 11, wherein the light incident surface of the coupling portion is provided with a first optical microstructure. ### Claim 13 (depends on 12) The display device as claimed in claim 12, wherein the first optical microstructure comprises a dot pattern microstructure. ### Claim 14 (depends on 13) The display device as claimed in claim 13, wherein a diameter of the dot pattern microstructure ranges from 20 micrometers to 100 micrometers, and a depth of the dot pattern microstructure ranges from 1 micrometer to 10 micrometers. ### Claim 15 (depends on 11) The display device as claimed in claim 11, wherein at least one of the first surface and the second surface of the main body is provided with a second optical microstructure. ### Claim 16 (depends on 11) The display device as claimed in claim 11, wherein an angle between the light-exiting surface of the light-emitting unit and the light incident surface of the coupling portion is an acute angle, and the light incident surface is configured to refract the light of the light-emitting unit into the light guide body. ### Claim 17 (depends on 11) The display device as claimed in claim 11, wherein the coupling portion further comprises a reflective surface configured to reflect the light emitted by the light-emitting unit to the second surface. ### Claim 18 (depends on 17) The display device as claimed in claim 17, wherein the light-exiting surface of the light-emitting unit is parallel to the light incident surface of the coupling portion, and the light incident surface of the coupling portion is configured to guide the light emitted from the light-exiting surface of the light-emitting unit, the reflective surface of the coupling portion is configured to reflect the light of the light incident surface of the coupling portion to the second surface. ### Claim 19 A display device, comprising: a backlight module comprising a backlight section and a through hole section, wherein the backlight section surrounds at least a portion of the through hole section; a liquid crystal cell disposed on the backlight module; a light guide body disposed in the through hole section; a light-emitting unit disposed on a light incident surface of the light guide body; and a camera unit disposed on a first surface of the light guide body; wherein the liquid crystal cell comprises a first polarizer, an array substrate, a liquid crystal layer, a color filter substrate, and a second polarizer; wherein wherein portions of the first polarizer and the second polarizer corresponding to the through hole section are hollow, and the first polarizer and the second polarizer are configured to receive light from an external environment, and to receive light emitted by the light-emitting unit through the light guide body.