WO2024109464A1 - Ensemble film optique, module de rétroéclairage, et appareil d'affichage - Google Patents

Ensemble film optique, module de rétroéclairage, et appareil d'affichage Download PDF

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Publication number
WO2024109464A1
WO2024109464A1 PCT/CN2023/127773 CN2023127773W WO2024109464A1 WO 2024109464 A1 WO2024109464 A1 WO 2024109464A1 CN 2023127773 W CN2023127773 W CN 2023127773W WO 2024109464 A1 WO2024109464 A1 WO 2024109464A1
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WO
WIPO (PCT)
Prior art keywords
film
optical film
glass substrate
light
light emitting
Prior art date
Application number
PCT/CN2023/127773
Other languages
English (en)
Chinese (zh)
Inventor
陈林楠
Original Assignee
惠州华星光电显示有限公司
Tcl华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 惠州华星光电显示有限公司, Tcl华星光电技术有限公司 filed Critical 惠州华星光电显示有限公司
Publication of WO2024109464A1 publication Critical patent/WO2024109464A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices

Definitions

  • the present application relates to the field of display technology, and in particular to an optical film assembly, a backlight module and a display device.
  • MLED technology Micro-LED technology and Mini-LED technology are collectively referred to as MLED technology.
  • MLED is mainly used in the backlight field.
  • the application of MLED-BLU backlight enables display products to achieve higher-level local dimming functions and high dynamic range (HDR) functions, and have better contrast, high color gamut, etc.
  • HDR high dynamic range
  • MLED-BLU display products are mainly composed of backlight panels, optical film components, and OC (Open cell, a panel without backlight).
  • the backlight panel is usually a printed circuit board (PCB) substrate or a glass substrate;
  • the optical film is mostly made of polymer materials, and is mainly made of polyethylene terephthalate (PET) or polycarbonate (PC) and other materials as the base material.
  • the backlight is usually required to have high brightness.
  • the heat generated by the heat loss of LED and backplane circuit is one of the main reasons for testing the reliability of the product.
  • the optical film component is usually a polymer material, which often produces expansion, contraction, curling and other problems at high temperature, thus affecting the display quality.
  • the present application provides an optical film assembly, a backlight module and a display device, which can effectively improve the reliability and flatness of the optical film assembly at high temperatures.
  • the present application provides an optical film assembly, comprising at least a first optical film and a second optical film stacked together;
  • the first optical film comprises a first glass substrate and a first prism film;
  • the second optical film comprises a second glass substrate, a second prism film and a brightness enhancement film;
  • the first glass substrate and the second glass substrate are arranged opposite to each other;
  • the first glass substrate includes a first light incident surface and a first light emitting surface which are arranged opposite to each other, the first light emitting surface is arranged close to the second glass substrate, and the first prism film is formed on the first light emitting surface;
  • the second glass substrate includes a second light incident surface and a second light emitting surface which are arranged opposite to each other, the second light incident surface is arranged close to the first glass substrate, the second prism film is formed on the second light incident surface, and the brightness enhancement film is formed on the second light emitting surface.
  • the present application also provides a backlight module, comprising a backlight source assembly, a diffusion plate, and an optical film assembly; wherein the diffusion plate is located between the backlight source assembly and the optical film assembly, and the diffusion plate is located on a side of the first optical film away from the second optical film; the optical film assembly at least comprises a first optical film and a second optical film stacked; the first optical film comprises a first glass substrate and a first prism film; the second optical film comprises a second glass substrate, a second prism film, and a brightness enhancement film;
  • the first glass substrate and the second glass substrate are arranged opposite to each other;
  • the first glass substrate includes a first light incident surface and a first light emitting surface which are arranged opposite to each other, the first light emitting surface is arranged close to the second glass substrate, and the first prism film is formed on the first light emitting surface;
  • the second glass substrate includes a second light incident surface and a second light emitting surface which are arranged opposite to each other, the second light incident surface is arranged close to the first glass substrate, the second prism film is formed on the second light incident surface, and the brightness enhancement film is formed on the second light emitting surface.
  • the present application also provides a display device, comprising a display panel and a backlight module; wherein the display panel is located on a side of the second optical film away from the first optical film; the backlight module comprises a backlight source assembly, a diffusion plate, and an optical film assembly; wherein the diffusion plate is located between the backlight source assembly and the optical film assembly, and the diffusion plate is located on a side of the first optical film away from the second optical film; the optical film assembly comprises at least a first optical film and a second optical film stacked; the first optical film comprises a first glass substrate and a first prism film; the second optical film comprises a second glass substrate, a second prism film, and a brightness enhancement film;
  • the first glass substrate and the second glass substrate are arranged opposite to each other;
  • the first glass substrate includes a first light incident surface and a first light emitting surface which are arranged opposite to each other, the first light emitting surface is arranged close to the second glass substrate, and the first prism film is formed on the first light emitting surface;
  • the second glass substrate includes a second light incident surface and a second light emitting surface which are arranged opposite to each other, the second light incident surface is arranged close to the first glass substrate, the second prism film is formed on the second light incident surface, and the brightness enhancement film is formed on the second light emitting surface.
  • FIG. 1 is a schematic diagram of the cross-sectional structure of an optical film assembly provided in an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of the first optical film provided in FIG. 1 .
  • FIG. 3 is a schematic diagram of the cross-sectional structure of the first optical film provided in FIG. 2 .
  • FIG. 4 is a schematic structural diagram of the second optical film provided in FIG. 1 .
  • FIG. 5 is a schematic diagram of the cross-sectional structure of the second optical film provided in FIG. 4 .
  • FIG. 6 is a schematic diagram of the cross-sectional structure of another optical film assembly provided in an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of the first optical film provided in FIG. 6 .
  • FIG. 8 is a schematic diagram of the cross-sectional structure of the first optical film provided in FIG. 7 .
  • FIG. 9 is a schematic diagram of a cross-sectional structure of a backlight module provided in an embodiment of the present application.
  • FIG. 10 is a schematic diagram of the cross-sectional structure of another backlight module provided in an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a cross-sectional structure of a display device provided in an embodiment of the present application.
  • an embodiment of the present application provides an optical film assembly 1, which includes a first optical film 2 and a second optical film 3 stacked together.
  • the first optical film 2 includes a first glass substrate 4 and a first prism film 5;
  • the second optical film 3 includes a second glass substrate 6, a second prism film 7 and a brightness enhancement film 8.
  • the first glass substrate 4 and the second glass substrate 6 are arranged relative to each other, and the extension direction of the prisms in the first prism film 5 and the extension direction of the prisms in the second prism film 7 are perpendicular to each other.
  • the prism sheet (BEF) mainly uses total reflection and refraction to concentrate the transmitted light within the preset viewing angle range, thereby increasing the brightness within the preset field of view;
  • the brightness enhancement film (DBEF) is a multi-layer film structure, which integrates multiple layers of thin films with different film thicknesses and different refractive indices, and achieves the effect of polarization state selection and improved reflection through light interference.
  • the first glass substrate 4 includes a first light incident surface 9 and a first light emitting surface 10 that are oppositely disposed.
  • the first light emitting surface 10 is disposed close to the second glass substrate 6 , and the first prism film 5 is formed on the first light emitting surface 10 .
  • the first prism film 5 is fixedly connected to the first light emitting surface 10 by van der Waals force. It can be understood that the first prism film 5 is in direct contact with the first light emitting surface 10 of the first glass substrate 4 and is fixedly connected.
  • the material of the first prism film 5 is an inorganic material, and the first prism film 5 is prepared by a chemical vapor deposition (CVD) process and a yellow light process.
  • CVD chemical vapor deposition
  • the manufacturing process of the first prism film includes the following steps:
  • the inorganic film is patterned by a yellow light process to form a first prism film.
  • the material of the first prism film 5 is a polymer material, such as acrylic resin; the first prism film 5 is prepared by thermal/photocuring molding.
  • the first prism film 5 includes a plurality of first prisms 11 arranged side by side in sequence along a first direction on the first light emitting surface 10 of the first glass substrate 4; wherein the first prisms 11 extend along a second direction and protrude in a direction away from the first light incident surface 9, and the first direction and the second direction are perpendicular to each other.
  • the cross section of the first prism 11 is a triangle, but is not limited thereto.
  • the second glass substrate 6 includes a second light incident surface 12 and a second light emitting surface 13 that are relatively arranged, the second light incident surface 12 is arranged close to the first glass substrate 4, the second prism film 7 is formed on the second light incident surface 12, and the brightness enhancement film 8 is formed on the second light emitting surface 13.
  • the second prism film 7 is fixedly connected to the second light incident surface 12 by van der Waals force
  • the brightness enhancement film 8 is fixedly connected to the second light emitting surface 13 by van der Waals force. It can be understood that the second prism film 7 is in direct contact with and fixedly connected to the second light incident surface 12 of the second glass substrate 6, and the brightness enhancement film 8 is in direct contact with and fixedly connected to the second light emitting surface 13 of the second glass substrate 6.
  • the second prism film 7 includes a plurality of second prisms 14 sequentially arranged side by side along the second direction on the second light incident surface 12 of the second glass substrate 6 .
  • the second prisms 14 extend along the first direction and bulge away from the second light emitting surface 13 .
  • the material of the second prism film 7 and the material of the first prism film 5 may be the same, and the preparation method of the second prism film 7 is the same as the preparation method of the first prism film 5, for example, by using a CVD process and a yellow light process.
  • the brightness enhancement film 8 includes a multilayer film 15 stacked sequentially on the second light emitting surface 13 of the second glass substrate 6. Any two films 15 have different film thicknesses and different refractive indices, and any two adjacent films 15 are fixedly connected by van der Waals forces. Specifically, the arrangement of the multilayer film 15 satisfies the principle of a distributed Bragg reflector.
  • the material of the brightness enhancement film 8 includes an inorganic material; the brightness enhancement film 8 can be formed on the second light emitting surface 13 of the second glass substrate 6 by using a CVD process.
  • the optical film assembly 1 is not limited to the first optical film 2 and the second optical film 3.
  • Other optical films can be superimposed on the first optical film 2 and the second optical film 3 according to optical needs.
  • the added optical films all use a glass substrate as a substrate, and the optical film in the optical film is in direct contact with and fixedly connected to the glass substrate.
  • a first glass substrate 4 and a second glass substrate 6 are used as substrates for the first optical film 2 and the second optical film 3, respectively.
  • glass substrates have better light transmittance and anti-expansion and shrinkage properties, and can avoid problems such as expansion, shrinkage or curling of the optical film under high temperature environments, thereby effectively improving the reliability of the optical film assembly 1 under high temperature;
  • the first prism film 5 is directly formed on the first glass substrate 4, and the second prism film 7 and the brightness enhancement film 8 are directly formed on the second glass substrate 6, realizing the integration of the first optical film 2 and the second optical film 3, so that the first optical film 2 and the second optical film
  • the sheet 3 has higher expansion and contraction resistance and flatness, thereby making the optical film assembly 1 more resistant to expansion and contraction and flatness, which is beneficial to improving the reliability and flatness of the optical film assembly 1 at high temperatures;
  • the first prism film 5, the second prism film 7 and the brightness enhancement film 8 made of inorganic material can
  • the embodiment of the present application further provides an optical film assembly 1 ′, which is different from the aforementioned embodiment in that the first optical film 2 ′ further includes a light conversion layer 16 formed on the first light incident surface 9 of the first glass substrate 4.
  • the light conversion layer 16 is used to receive the first light and convert it into the second light for output.
  • the light conversion layer 16 receives blue light and converts it into a light composed of a mixture of green light and red light for output, or the light conversion layer 16 receives ultraviolet light and converts it into a light composed of a mixture of blue light, green light and red light for output.
  • the light conversion layer 16 includes a quantum dot film 17 and a barrier film 18; the quantum dot film 17 is formed on the first light incident surface 9 of the first glass substrate 4; the barrier film 18 is located on the side of the quantum dot film 17 away from the first glass substrate 4.
  • the barrier film 18 is used to prevent water vapor from invading to protect the quantum dot film 17.
  • the quantum dot film 17 includes a red quantum dot material and a green quantum dot material; wherein the red quantum dot material is used to convert blue light or ultraviolet light into red light, and the green quantum dot material is used to convert blue light or ultraviolet light into green light.
  • the material of the quantum dot film 17 can be adjusted according to the light wave type of the provided light source.
  • the quantum dot film 17 can be formed on the first light incident surface 9 of the first glass substrate 4 by coating or inkjet printing.
  • optical film assembly 1' provided in the embodiment of the present application can be used in combination with a light source that emits blue light or ultraviolet light.
  • the optical film assembly 1' provided in the embodiment of the present application has higher reliability and higher flatness at high temperature.
  • the embodiment of the present application further provides a backlight module 19, the backlight module 19 comprising a backlight source assembly 21, a diffuser plate 20, and an optical film assembly (1, 1’) provided in any one of the aforementioned embodiments; wherein the diffuser plate 20 is located between the backlight source assembly 21 and the optical film assembly (1, 1’), and the diffuser plate 20 is located on a side of the first optical film (2, 2’) away from the second optical film 3.
  • the diffuser plate 20 is used to scatter the transmitted light to achieve an atomization effect, so that the light distribution is more uniform.
  • the backlight source assembly 21 includes a back plate 22 and a light source 23 located on the back plate 22; wherein the light source 23 is located on a side of the diffuser 20 away from the first optical film (2, 2'), and the light source 23 is located on a side of the back plate 22 close to the diffuser 20. It can be understood that the backlight source assembly 21 is a direct-type backlight source.
  • the backlight source assembly 21 ′ in the backlight module 19 ′ can also be a side-entry backlight source, and specifically includes a back plate 22, a light source 23 located on the back plate 22, and a light guide plate 24 located on the side of the diffuser 20 away from the first optical film (2, 2 ′).
  • the light source 23 and the back plate 22 are located on the side of the light guide plate 24, and the light source 23 is located on the side of the back plate 22 close to the light guide plate 24.
  • the light source 23 can be located on one side of the light guide plate 24, or on both sides or multiple sides of the light guide plate 24, and there is no limitation here.
  • the light source 23 includes any one or more of LED, Micro-LED and Mini-LED, but is not limited thereto; and, the number of the light sources 23 is not limited, and multiple light sources 23 can be arranged in an array on the back panel 22, or can be arranged in a single row on the back panel 22, which is not limited here.
  • the back panel 22 includes a PCB board, which is used to control the light source 23 to emit light.
  • the backlight source assembly (21, 21') may also include a reflective layer or other conventional optical structures, which are not described in detail here.
  • the light source 23 when the optical film assembly does not include a light conversion layer, the light source 23 emits white light or RGB three-color mixed light; when the optical film assembly includes a light conversion layer, the light source 23 emits blue light or ultraviolet light.
  • the optical film assembly provided by the embodiment of the present application has higher reliability and higher flatness at high temperature, and can effectively improve the service life and working performance of the back module.
  • the embodiment of the present application further provides a display device 25, which includes a display panel 26 and a backlight module (19, 19') as described in the above embodiment.
  • the display panel is located on a side of the second optical film away from the first optical film.
  • the display panel 26 includes a liquid crystal display panel, and the backlight module (19, 19') is used to provide a backlight source for the display panel 26.
  • the optical film assembly provided in the embodiment of the present application has higher reliability and higher flatness at high temperatures, which can effectively improve the service life and working performance of the back module, thereby effectively improving the service life and display effect of the display device.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

L'invention concerne un ensemble film optique, un module de rétroéclairage et un appareil d'affichage. L'ensemble film optique (1) comprend au moins un premier film optique (2) et un second film optique (3). Le premier film optique (2) comprend un premier substrat en verre (4) et un premier film prismatique (5) formé sur une première surface électroluminescente (10) du premier substrat en verre (4). Le second film optique (3) comprend un second substrat en verre (6), un second film prismatique (7) formé sur une seconde surface d'incidence de lumière (12) du second substrat en verre (6), et un film d'amélioration de luminosité (8) formé sur une seconde surface électroluminescente (13) du second substrat en verre (6).
PCT/CN2023/127773 2022-11-25 2023-10-30 Ensemble film optique, module de rétroéclairage, et appareil d'affichage WO2024109464A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211494194.6A CN115840310A (zh) 2022-11-25 2022-11-25 一种光学膜片组件、背光模组和显示装置
CN202211494194.6 2022-11-25

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WO2024109464A1 true WO2024109464A1 (fr) 2024-05-30

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WO (1) WO2024109464A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115840310A (zh) * 2022-11-25 2023-03-24 Tcl华星光电技术有限公司 一种光学膜片组件、背光模组和显示装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1530713A (zh) * 2003-03-05 2004-09-22 ���ǵ�����ʽ���� 光学薄片以及应用该光学薄片的lcd装置
US20110058389A1 (en) * 2009-09-10 2011-03-10 Coretronic Corporation Brightness enhancement film and backlight module
CN104220904A (zh) * 2012-04-13 2014-12-17 日东电工株式会社 光学构件、偏振板组及液晶显示设备
CN111090141A (zh) * 2018-10-24 2020-05-01 群创光电股份有限公司 背光组件及其应用的显示设备
US20200408983A1 (en) * 2018-10-09 2020-12-31 Wuhan China Star Optoelectronics Technology Co., Ltd. Flexible display device and backlight module thereof
CN213240572U (zh) * 2020-09-29 2021-05-18 惠州视维新技术有限公司 一种光学膜片、背光模组及显示装置
CN115840310A (zh) * 2022-11-25 2023-03-24 Tcl华星光电技术有限公司 一种光学膜片组件、背光模组和显示装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102928984A (zh) * 2011-08-09 2013-02-13 旭丽电子(广州)有限公司 分光元件及其制造方法
CN103926744B (zh) * 2014-04-01 2018-04-20 京东方科技集团股份有限公司 反射膜及其制造方法和显示面板
CN104456412A (zh) * 2014-12-23 2015-03-25 合肥鑫晟光电科技有限公司 一种光学膜片、背光源及显示设备
CN105807493A (zh) * 2016-05-25 2016-07-27 昆山龙腾光电有限公司 液晶显示屏
CN209858903U (zh) * 2019-01-23 2019-12-27 拓米(成都)应用技术研究院有限公司 一种复合光学膜、背光装置和显示装置
CN210720956U (zh) * 2019-11-07 2020-06-09 宁波视睿迪光电有限公司 一种背光模块
CN110824770A (zh) * 2019-11-07 2020-02-21 宁波视睿迪光电有限公司 一种背光模块
CN111564110B (zh) * 2020-05-29 2022-07-12 上海中航光电子有限公司 一种显示面板和显示装置
CN111665591B (zh) * 2020-06-29 2021-09-03 武汉华星光电技术有限公司 一种导光板、背光模组和液晶显示模组

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1530713A (zh) * 2003-03-05 2004-09-22 ���ǵ�����ʽ���� 光学薄片以及应用该光学薄片的lcd装置
US20110058389A1 (en) * 2009-09-10 2011-03-10 Coretronic Corporation Brightness enhancement film and backlight module
CN104220904A (zh) * 2012-04-13 2014-12-17 日东电工株式会社 光学构件、偏振板组及液晶显示设备
US20200408983A1 (en) * 2018-10-09 2020-12-31 Wuhan China Star Optoelectronics Technology Co., Ltd. Flexible display device and backlight module thereof
CN111090141A (zh) * 2018-10-24 2020-05-01 群创光电股份有限公司 背光组件及其应用的显示设备
CN213240572U (zh) * 2020-09-29 2021-05-18 惠州视维新技术有限公司 一种光学膜片、背光模组及显示装置
CN115840310A (zh) * 2022-11-25 2023-03-24 Tcl华星光电技术有限公司 一种光学膜片组件、背光模组和显示装置

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