CN114265224B - UPC display panel based on LCD - Google Patents

UPC display panel based on LCD Download PDF

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Publication number
CN114265224B
CN114265224B CN202111574666.4A CN202111574666A CN114265224B CN 114265224 B CN114265224 B CN 114265224B CN 202111574666 A CN202111574666 A CN 202111574666A CN 114265224 B CN114265224 B CN 114265224B
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China
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light
guide plate
light guide
liquid crystal
lcd
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CN202111574666.4A
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CN114265224A (en
Inventor
黄顺运
覃佐波
刘朋飞
田峰
张亚荣
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Hefei Taiwo Intelligent Equipment Co ltd
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Hefei Taiwo Intelligent Equipment Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract

The invention discloses a UPC display panel based on an LCD, which comprises a liquid crystal display screen, wherein a light guide plate is arranged below the liquid crystal display screen, a camera module is arranged below the light guide plate, a small hole is formed in the position, corresponding to the camera module, of the light guide plate, a light transmitting mirror is fixedly installed on the inner wall of the small hole through optical cement, the refractive index of the light transmitting mirror is larger than that of the optical cement, and the refractive index of the optical cement is larger than that of the light guide plate; according to the invention, the special-shaped light-transmitting mirror with the mesh points is embedded below the light guide plate, and the light-emitting surface of the light-transmitting mirror is set to be the concave surface, so that light of the light guide plate is better diffused to the liquid crystal screen, an obvious bright-dark boundary area of the screen is avoided, the light transmittance of the light-transmitting mirror is improved, and the camera module can more easily receive external light.

Description

UPC display panel based on LCD
Technical Field
The invention relates to the technical field of display equipment, in particular to a UPC display panel based on an LCD.
Background
At present, a mobile phone screen is developing towards a comprehensive screen, a television is also developing towards a narrow-frame intellectualization, no matter the mobile phone or the intelligent television is a mobile phone or an intelligent television, a Camera is indispensable, but the television with the narrow frame is a television, the Camera cannot be hidden on the frame of the television, the technology needs to be applied to a UPC (ultra Peer Camera, under-screen Camera) technology, the current Under-screen Camera technology is only applied to an OLED (organic light emitting diode) panel of the mobile phone, the television with the LCD screen and the mobile phone do not have products of the Under-screen Camera temporarily, the price of the OLED screen is far higher than that of the LCD screen, the existing OLED panel reduces the pixel density of a Camera area, simultaneously reduces the pixel size, and changes the pixel arrangement of the area to enable partial light to penetrate through the panel to irradiate on the Camera module, and the light receiving effect of the Camera module is poor.
Disclosure of Invention
The present invention is directed to an LCD-based UPC display panel to solve the above problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a UPC display panel based on an LCD comprises an outer frame, wherein the top of the inner wall of the outer frame is fixedly connected with a liquid crystal display screen, a light guide plate is arranged below the liquid crystal display screen, a camera module is arranged below the light guide plate, a small hole is formed in the position, corresponding to the camera module, of the light guide plate, a light transmitting mirror is fixedly installed on the inner wall of the small hole through optical cement, the refractive index of the light transmitting mirror is larger than that of the optical cement, and the refractive index of the optical cement is larger than that of the light guide plate;
the backlight surface of the light-transmitting mirror and the backlight surface of the light guide plate are both provided with mesh points, the mesh point density on the light-transmitting mirror is smaller than the mesh point density of the light guide plate, the mesh point depth on the light-transmitting mirror is shallower than the mesh point depth on the light guide plate, and the light-emitting surface of the light-transmitting mirror is a concave surface.
As a further scheme of the invention: the liquid crystal display screen comprises an upper glass substrate, an upper optical filter, an upper alignment film, a liquid crystal layer, a lower alignment film, a lower optical filter and a lower glass substrate which are arranged in sequence from top to bottom; a diaphragm is arranged between the liquid crystal display screen and the light guide plate, and the light-transmitting mirror penetrates through the diaphragm and the light guide plate; a condenser lens is also arranged between the light-transmitting lens and the camera module;
an upward pit is arranged on the position of the lower glass substrate corresponding to the light-transmitting mirror; a round hole is formed in the position, corresponding to the pit, of the lower optical filter, the top of the pit penetrates through the lower optical filter through the round hole, and the position, corresponding to the pit, of the lower alignment film is raised upwards, so that the thickness of the liquid crystal layer at the corresponding position is reduced;
the liquid crystal layer is cholesteric liquid crystal and is arranged in a layered mode, and the number of layers of the cholesteric liquid crystal is correspondingly reduced in an area with a thin liquid crystal layer.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the special-shaped light-transmitting mirror with the mesh points is embedded below the light guide plate, and the light-emitting surface of the light-transmitting mirror is set to be the concave surface, so that light of the light guide plate is better diffused to the liquid crystal screen, an obvious bright-dark boundary area of the screen is avoided, meanwhile, the light transmittance of the light-transmitting mirror is improved, and the camera module can more easily receive external light; meanwhile, the pits are formed in the lower glass substrate, the round holes are formed in the positions, corresponding to the pits, in the liquid crystal screen, the thickness of the liquid crystal layer at the positions is smaller than that of liquid crystals in other areas, the transmittance of the liquid crystal screen can be improved, and light can penetrate through the liquid crystal screen more easily to irradiate the camera module.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
fig. 2 is a cross-sectional view of a liquid crystal display panel according to the present invention.
In the figure: 1. a light guide plate; 2. an outer frame; 3. a camera module; 4. a light-transmitting mirror; 5. an upper glass substrate; 6. an upper optical filter; 7. an upper alignment film; 8. a liquid crystal layer; 9. a lower alignment film; 10. a lower optical filter; 11. a lower glass substrate; 12. a membrane; 13. a condenser lens; 14. a pit; 15. and (3) optical cement.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, in an embodiment of the present invention, an LCD-based UPC display panel includes an outer frame 2, a liquid crystal display is fixedly connected to a top of an inner wall of the outer frame 2, a light guide plate 1 is disposed below the liquid crystal display, a camera module 3 is disposed below the light guide plate 1, a small hole is disposed on the light guide plate 1 at a position corresponding to the camera module 3, and a transparent mirror 4 is fixedly mounted on an inner wall of the small hole through an optical adhesive 15;
in order to reduce the loss of light in the light-transmitting mirror 4 and achieve the maximum utilization rate of light effect, the refractive index of the light-transmitting mirror 4 is greater than the refractive index of the optical adhesive 15, and the refractive index of the optical adhesive 15 is greater than the refractive index of the light guide plate 1;
the backlight surface of the light-transmitting mirror 4 and the backlight surface of the light guide plate 1 are both provided with dots, the density of the dots on the light-transmitting mirror 4 is smaller than that of the dots on the light guide plate 1, the depth of the dots on the light-transmitting mirror 4 is shallower than that of the dots on the light guide plate 1, and the dots on the backlight surface of the light-transmitting mirror 4 are shallow and sparse, so that the light transmittance of the light-transmitting mirror 4 is improved, and the camera module 3 can more easily receive external light;
the light-emitting surface of the light-transmitting mirror 4 is a concave surface, so that light of the light guide plate 1 is better diffused to the liquid crystal screen, and the screen is prevented from generating obvious bright and dark boundary areas;
referring to fig. 2, the lcd panel includes an upper glass substrate 5, an upper optical filter 6, an upper alignment film 7, a liquid crystal layer 8, a lower alignment film 9, a lower optical filter 10, and a lower glass substrate 11 sequentially disposed from top to bottom; a diaphragm 12 is arranged between the liquid crystal display screen and the light guide plate 1, and the light-transmitting mirror 4 penetrates through the diaphragm 12 and the light guide plate 1;
a condenser 13 is arranged between the light-transmitting lens 4 and the camera module 3; the condensing lens 13 better condenses the external light onto the camera module 3, so that the light receiving effect of the camera module 3 is improved;
an upward pit 14 is arranged on the lower glass substrate 11 corresponding to the position of the light-transmitting mirror 4; a round hole is formed in the position, corresponding to the pit 14, of the lower optical filter 10, the top of the pit 14 penetrates through the lower optical filter 10 through the round hole, and the position, corresponding to the pit 14, of the lower alignment film 9 is raised upwards, so that the thickness of the liquid crystal layer 8 at the corresponding position is reduced;
the light-emitting surface of the light-transmitting mirror 4 and the surface of the pit 14 of the lower glass substrate 11 are both smooth surfaces without obvious edges and corners, so that the light is prevented from being focused on a certain point, and bright spots appear on the picture. The light-transmissive mirror 4 may be a single lens, a combination of lenses, or a liquid lens.
The liquid crystal layer 8 is cholesteric liquid crystal and is arranged in a layered mode, the number of layers of cholesteric liquid crystal is correspondingly reduced in a region where the liquid crystal layer 8 is thin, the liquid crystal thickness is reduced, the transmittance of the liquid crystal screen can be improved, and light can more easily penetrate through the liquid crystal screen to irradiate the camera module 3.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims (4)

1. A UPC display panel based on an LCD comprises a liquid crystal display screen, wherein a light guide plate (1) is arranged below the liquid crystal display screen, and a camera module (3) is arranged below the light guide plate (1), and the UPC display panel is characterized in that a small hole is formed in the position, corresponding to the camera module (3), of the light guide plate (1), a light-transmitting mirror (4) is fixedly installed on the inner wall of the small hole through optical cement (15), the refractive index of the light-transmitting mirror (4) is larger than that of the optical cement (15), and the refractive index of the optical cement (15) is larger than that of the light guide plate (1);
the backlight surface of printing opacity mirror (4) and the backlight surface of light guide plate (1) all are provided with the site, just the site density on printing opacity mirror (4) is less than the site density of light guide plate (1), the site degree of depth on printing opacity mirror (4) is shallow than the site degree of depth on light guide plate (1), and the play plain noodles of printing opacity mirror (4) sets up to the concave surface.
2. The UPC display panel based on LCD of claim 1, wherein the LCD comprises an upper glass substrate (5), an upper optical filter (6), an upper alignment film (7), a liquid crystal layer (8), a lower alignment film (9), a lower optical filter (10) and a lower glass substrate (11) which are arranged from top to bottom in sequence; an upward concave pit (14) is arranged on the position of the lower glass substrate (11) corresponding to the light-transmitting mirror (4); the position of the lower optical filter (10) corresponding to the pit (14) is provided with a round hole, the top of the pit (14) penetrates through the lower optical filter (10) through the round hole, and the position of the lower alignment film (9) corresponding to the pit (14) is upwards raised, so that the thickness of the liquid crystal layer (8) at the corresponding position is reduced.
3. An LCD-based UPC display panel according to claim 1, characterized in that a membrane (12) is arranged between the LCD and the light guide plate (1), and the light-transmissive mirror (4) penetrates the membrane (12) and the light guide plate (1); and a condenser (13) is also arranged between the light-transmitting lens (4) and the camera module (3).
4. An LCD-based UPC display panel according to claim 2, characterized in that the liquid crystal layer (8) is cholesteric liquid crystal and is arranged in layers, the number of layers of cholesteric liquid crystal being correspondingly reduced in the areas where the liquid crystal layer (8) is thinner.
CN202111574666.4A 2021-12-21 2021-12-21 UPC display panel based on LCD Active CN114265224B (en)

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CN202111574666.4A CN114265224B (en) 2021-12-21 2021-12-21 UPC display panel based on LCD

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Application Number Priority Date Filing Date Title
CN202111574666.4A CN114265224B (en) 2021-12-21 2021-12-21 UPC display panel based on LCD

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CN114265224B true CN114265224B (en) 2023-04-18

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107884869A (en) * 2017-11-28 2018-04-06 合肥泰沃达智能装备有限公司 A kind of backlight module of light leakage light guide plate
CN108196388A (en) * 2018-02-12 2018-06-22 京东方科技集团股份有限公司 A kind of display device and its manufacturing method
CN109031510A (en) * 2018-08-24 2018-12-18 京东方科技集团股份有限公司 A kind of light guide plate and preparation method thereof, backlight module and display device
CN112889105A (en) * 2018-07-28 2021-06-01 华为技术有限公司 Light filling module, display screen, display device and terminal
CN113628530A (en) * 2020-05-07 2021-11-09 群创光电股份有限公司 Display device and mobile device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102672833B1 (en) * 2018-08-27 2024-06-05 엘지디스플레이 주식회사 Display device
CN209590474U (en) * 2019-03-27 2019-11-05 深圳市隆利科技股份有限公司 A kind of liquid crystal display device and terminal device of high screen accounting
CN211294502U (en) * 2020-01-06 2020-08-18 深圳市德仓科技有限公司 Terminal display module
CN112485947B (en) * 2020-12-09 2022-08-16 武汉天马微电子有限公司 Display module and display device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107884869A (en) * 2017-11-28 2018-04-06 合肥泰沃达智能装备有限公司 A kind of backlight module of light leakage light guide plate
CN108196388A (en) * 2018-02-12 2018-06-22 京东方科技集团股份有限公司 A kind of display device and its manufacturing method
CN112889105A (en) * 2018-07-28 2021-06-01 华为技术有限公司 Light filling module, display screen, display device and terminal
CN109031510A (en) * 2018-08-24 2018-12-18 京东方科技集团股份有限公司 A kind of light guide plate and preparation method thereof, backlight module and display device
CN113628530A (en) * 2020-05-07 2021-11-09 群创光电股份有限公司 Display device and mobile device

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