GB2598789A - Display device - Google Patents

Display device Download PDF

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Publication number
GB2598789A
GB2598789A GB2014489.5A GB202014489A GB2598789A GB 2598789 A GB2598789 A GB 2598789A GB 202014489 A GB202014489 A GB 202014489A GB 2598789 A GB2598789 A GB 2598789A
Authority
GB
United Kingdom
Prior art keywords
display
backplate
display panel
display device
frame
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
GB2014489.5A
Other versions
GB202014489D0 (en
Inventor
Andrei Muntean Marius
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Continental Automotive Romania SRL
Original Assignee
Continental Automotive GmbH
Continental Automotive Romania SRL
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 Continental Automotive GmbH, Continental Automotive Romania SRL filed Critical Continental Automotive GmbH
Priority to GB2014489.5A priority Critical patent/GB2598789A/en
Publication of GB202014489D0 publication Critical patent/GB202014489D0/en
Publication of GB2598789A publication Critical patent/GB2598789A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

Display device comprising: a backplate (21); a reflector (22); a light conductor (23); a foil stack (24); a display panel (25); an adhesive tape (26); wherein the backplate has bent and thickened side walls (21.1) that support directly the display panel (25). The adhesive tape may be glued between the backplate and the display panel. The width of the sidewall may be between 3-3.5mm. The display panel may have glass on all four sides (A-B) exceeding the width of the backplate wall.

Description

Description
Display Device
Field of the invention
[0001] The present invention belongs to a field of display technology and relates to a display device for an information system for a vehicle.
Prior art
[0002] DE 102011082933 Al describes a display device that has a display element with an interface for receiving a picture signal, wherein a display panel designed as a LCD generates a visual display based on the picture signal. A carrier frame designed as an angle eleme=, is provided with a support surface for the display element. An adhesive bond designed as a stripe along an edge area of the display element, is made of hardened liquid adhesive and connects the display element with the carrier frame.
[0003] EP 2749936 A2 belongs to a field of liquid crystal display technical and relates to a backlight module and a liquid crystal display. The backlight module includes a backplane and a light source arranged on the backplane, and further includes a position-limiting unit. The position-limiting unit is arranged on the backplane and is capable of limiting a liquid crystal panel at a set position. The backlight module according to the present invention is a direct-type backlight module.
[0004] Documents US 2016139442 Al and US 2017176805 Al also disclose the elements of a universal display module.
[0005] Another known universal display module generally includes, among other parts (like a light conductor and a reflector, for example) an electronic display panel unit to display moving images, a display frame (made of polycarbonate material, for example) to support the electronic display panel unit, adhesive tapes to join the display panel unit with the display frame and a magnesium backplate housing all parts of the universal display module for preventing damage during usage. The display panel is attached with clips to backplate. Also, isolation tapes are needed to prevent optical bonding liquid to enter different parts of the display unit.
Disadvantages of the prior art
[0006] Due to flatness issues of the display frame in the prior art arrangement, lots of correction loops are required in order to fix black uniformity. Because the display frame is attached to the backplate with clips, many adjustments are required, and this may create noise problems during vibration testing.
[0007] Another disadvantage is that the material of the display frame has a different thermal expansion coefficient 20 compared to the backplate material and for this reason gaps are required between the frame and the backplate, which also add tolerances to the assembly.
[0008] Additional assembly and verification steps are required to check if all the clips are properly latched.
[0009] The thickness of the display unit is increased with all these components: display panel, display frame and magnesium backplate, but this doesn't provide any real structural strength.
Problem to be solved by the invention [0010] The main problem to be solved by the present invention is the flatness issue of the display frame. An acceptable flatness is hard to reach due to many adjustment steps and correction loops that are required.
SUMMARY OF THE INVENTION
[0011] The invention solves the technical problem by providing a display device comprising a backplate, a reflector, a light conductor, a foil stack, a display panel, an adhesive tape, wherein the backplate has bent and thickened side walls 10 that support directly the display panel.
The advantages of the invention [0012] By using the display arrangement according to the invention, the following advantages are obtained: better flatness for a thinner display with stability during temperature and vibration testing. Also, a lower price for the display module is expected.
[0013] By eliminating the display frame together with the holes for clips, the risk for the optical bonding liquid to 20 enter the display module is removed.
Brief description of the drawings
[0014] The invention will be hereafter described with reference to the drawings, as follows: -Fig. 1 shows a front view of a display module from the state of the art; -Fig. 2 illustrates a section view of the display module from Fig. 1; - Fig. 3 shows a rear view of the display module from 30 Fig. 1; - Fig. 4 shows a front view of a display module according to the invention; - Fig. 5 illustrates a section view of the display module according to the invention; - Fig. 6 shows a rear view of the display module according 5 to the invention.
[0015] List of references in the drawings: 1, 21 -Backplate 21.1 -Backplate side walls 2, 22 -Reflector 3, 23 -Light conductor 4, 24 -Foil stack 5, 25 -Display panel 6, 26 -Adhesive tape 7 - Frame 8 - Isolation tape 9 - Positioning bulge 10, 20 -Electromagnetic Interference tape (EMI) AB -distance measured from the edge of the display panel Detailed description of the invention and embodiments [0016] The present invention relates to an arrangement of a display module.
[0017] The object of this invention is to provide a new and innovative construction of a display module by eliminating the display frame and all the necessary steps and elements used to attach the display frame to the display panel and to the backplate.
[0018] Now, turning in details to the drawings, Fie-. 1 shows a front view of a display module known from prior art; it is observed that an active area of the display module is delimited by a display frame.
[0019] Fig. 2 is a cross-section view of the display module from Fig. 1. The display module comprises: a backplate 1, a reflector 2, a light conductor 3, a foil stack 4, a display panel 5, adhesive tape 6, a display frame 7 and isolation tape 8 on the exterior side of the display frame. Positioning bulge 9 serves to position the isolation tape 8. A light source, for example LEDs (not illustrated, nor referenced) is placed in the side edge of the display module.
[0020] Backplate 1, the back part of the display, is a box made of metallic (e.g. magnesium) or non-metallic (e.g. plastic) that contains all components of the display module. A metallic backplate is preferred for dimensional stability and a better heat dissipation. Reflector 2 is a thin plastic foil that redirects all the light emitted by light source (not illustrated) towards the display panel. The light conductor 3 is transparent and assures the uniformity and the transmission of the light towards the display panel. The foil stack 4 contains foils that level and maximize the light. The frame 7 is a frame made of polycarbonate, for example, located between the backplate and the display panel, which has the role to prevent light leakage and to ensure a support for the display panel.
[0021] Fig. 3 shows a rear view of the display module from prior art. The isolation tape 8 of the side walls of the backplate 1 is seen in the figure, as well as an Electromagnetic Interference (EMI) tape 10, which is a metallic layer that blocks electromagnetic radiations generated by the display panel and also covers the holes for clips (not illustrated, nor referenced).
[0022] Fig. 4 shows a front view of a display module according to the present invention; the display frame 7 is not depicted anymore on the edges of the display module.
[0023] Fig. 5 illustrates a cross-section view of a display module according to the invention. The display module comprises: a backplate 21 with bent side walls 21.1, a reflector 22, a light conductor 23, a foil stack 24, a display 5 panel 25 and adhesive tape 26.
[0024] The design of the backplate 21 has been modified as a support frame for the display panel, wherein the side walls have been thickened in order to obtain a larger contact surface S with the display panel. The adhesive tape 26 is put directly on top of the backplate side walls 21.1 which is supported directly by the backplate.
[0025] The contact surface has a width of 3-3.5 mm. In order to prevent light leakage, the display panel has black glass on all four sides on a distance AB, exceeding the width 15 of backplate wall.
[0026] Fig. 6 shows a rear view of a display module according to the invention. The isolation tape is not present anymore on the bent side walls of the backplate 21.

Claims (4)

  1. Patent claims 1. A display device comprising: a backplate, a reflector, a light conductor, a foil stack, a display panel, an adhesive tape, wherein the backplate has bent and thickened side walls that support directly the display panel.
  2. 2. The display device according to claim 1, wherein the adhesive tape is glued between the backplate and the display panel.
  3. 3. The display device according to claim 1, wherein the width of the side walls is 3 -3.5 mm.
  4. 4. The display device according to claims 1-3, wherein the display panel has black glass on all four sides on a distance AB, exceeding the width of backplate wall.
GB2014489.5A 2020-09-15 2020-09-15 Display device Pending GB2598789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2014489.5A GB2598789A (en) 2020-09-15 2020-09-15 Display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2014489.5A GB2598789A (en) 2020-09-15 2020-09-15 Display device

Publications (2)

Publication Number Publication Date
GB202014489D0 GB202014489D0 (en) 2020-10-28
GB2598789A true GB2598789A (en) 2022-03-16

Family

ID=73149782

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2014489.5A Pending GB2598789A (en) 2020-09-15 2020-09-15 Display device

Country Status (1)

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GB (1) GB2598789A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2613609A (en) * 2021-12-09 2023-06-14 Continental Automotive Tech Gmbh A lighting unit for a vehicle display and method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110102701A1 (en) * 2009-10-30 2011-05-05 Chimei Innolux Corporation Liquid crystal display device
CN202955582U (en) * 2012-12-14 2013-05-29 厦门天马微电子有限公司 Backlight module and liquid crystal display device
CN203405645U (en) * 2013-06-26 2014-01-22 厦门天马微电子有限公司 Liquid crystal display module and liquid crystal display device
US20140120275A1 (en) * 2011-04-25 2014-05-01 Boe Technology Group Co., Ltd Display device
KR20140095920A (en) * 2013-01-25 2014-08-04 엘지디스플레이 주식회사 Liquid crystal display apparatus
CN106896581A (en) * 2017-04-27 2017-06-27 武汉华星光电技术有限公司 Backlight assembly and liquid crystal display device
CN108227269A (en) * 2018-02-01 2018-06-29 京东方科技集团股份有限公司 A kind of middle shell, electronic equipment and its assemble method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110102701A1 (en) * 2009-10-30 2011-05-05 Chimei Innolux Corporation Liquid crystal display device
US20140120275A1 (en) * 2011-04-25 2014-05-01 Boe Technology Group Co., Ltd Display device
CN202955582U (en) * 2012-12-14 2013-05-29 厦门天马微电子有限公司 Backlight module and liquid crystal display device
KR20140095920A (en) * 2013-01-25 2014-08-04 엘지디스플레이 주식회사 Liquid crystal display apparatus
CN203405645U (en) * 2013-06-26 2014-01-22 厦门天马微电子有限公司 Liquid crystal display module and liquid crystal display device
CN106896581A (en) * 2017-04-27 2017-06-27 武汉华星光电技术有限公司 Backlight assembly and liquid crystal display device
CN108227269A (en) * 2018-02-01 2018-06-29 京东方科技集团股份有限公司 A kind of middle shell, electronic equipment and its assemble method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2613609A (en) * 2021-12-09 2023-06-14 Continental Automotive Tech Gmbh A lighting unit for a vehicle display and method thereof

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Publication number Publication date
GB202014489D0 (en) 2020-10-28

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