CN102621741A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
- Publication number
- CN102621741A CN102621741A CN2012101041279A CN201210104127A CN102621741A CN 102621741 A CN102621741 A CN 102621741A CN 2012101041279 A CN2012101041279 A CN 2012101041279A CN 201210104127 A CN201210104127 A CN 201210104127A CN 102621741 A CN102621741 A CN 102621741A
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- liquid crystal
- crystal display
- crystal panel
- backlight module
- display device
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 113
- 239000012788 optical film Substances 0.000 claims abstract description 11
- 230000017525 heat dissipation Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 5
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The invention provides a liquid crystal display device, which comprises a backlight module, a first liquid crystal display panel, a second liquid crystal display panel and a printed circuit board, wherein the backlight module comprises a light guiding plate and a plurality of optical films, backlights of the liquid crystal display device are provided by means of the light guiding plate and the optical films, the first liquid crystal display panel is arranged on one side of the backlight module, the second liquid crystal display panel is opposite to the first liquid crystal display panel and is disposed on the other side of the backlight module, and the printed circuit board is arranged on the backlight module, electrically connected with the first liquid crystal display panel and the second liquid crystal display panel and used for providing a control signal so that the liquid crystal display device can perform double-sided display by means of the first liquid crystal display panel and the second liquid crystal display panel. By means of the liquid crystal display device, two liquid crystal display panel are arranged on two opposite sides of the backlight module respectively, and the control signal is provided by means of the printed circuit board for the first liquid crystal display panel and the second liquid crystal display panel, thereby the function of double-sided display of the liquid crystal display device is achieved.
Description
Technical Field
The invention relates to a liquid crystal display technology, in particular to a liquid crystal display device with a double-sided display function.
Background
Currently, the mainstream liquid crystal backlight technology in the market includes two types of LEDs (Light emitting diodes) and CCFLs (Cold Cathode Fluorescent lamps). As is well known, liquid crystals do not emit light themselves, and only change color, so that a backlight is needed to view the displayed content. For example, CCFL is used as a backlight source in most conventional notebook screens, and the LED backlight screen uses light emitting diodes, white LED is a point light source, and CCFL is a strip light source.
Aiming at the CCFL backlight source, the working principle is as follows: when high voltage is applied to two ends of the lamp tube, a few electrons in the lamp tube impact the electrodes at high speed to generate secondary electron emission, discharge is started, mercury or inert gas in the lamp tube is impacted by the electrons to excite and radiate ultraviolet light of 253.7nm, and the generated ultraviolet light excites fluorescent powder coated on the inner wall of the lamp tube to generate visible light. In contrast, LED backlights use the LED technology, which is made of several thin layers of doped semiconductor material, one with excess electrons and the other lacking electrons to form positively charged holes, through which current flows during operation, the electrons and holes combine, and excess energy is released as light radiation. Light emitting diodes having different light emitting characteristics can be obtained by using different semiconductor materials, and for example, light emitting diodes that have been put into commercial use at present can provide colors of red, green, blue, cyan, orange, amber, white, etc., which are advantageous in that they are thinner and have a very wide color gamut.
However, in the prior art, the liquid crystal display device, from the liquid crystal module to the backlight module, has a substantially same or different structural style and a reduced thickness to be nearly the same, no matter whether the liquid crystal display device adopts a direct type or an edge type with a CCFL backlight source or adopts a direct type or an edge type with an LED backlight source. In view of the above, a task to be solved by the related art in the industry is how to design a liquid crystal display device capable of double-sided display, which reduces the thickness as much as possible based on the existing single-sided display, reduces the cost, and solves the heat dissipation problem inside the structure.
Disclosure of Invention
In view of the above-mentioned defects of the prior art liquid crystal display device in developing the dual-sided display function, the present invention provides a novel liquid crystal display device.
According to an aspect of the present invention, there is provided a liquid crystal display device including:
the backlight module comprises a light guide plate and a plurality of optical films, wherein the light guide plate and the optical films are used for providing a backlight source of the liquid crystal display device;
the first liquid crystal panel is arranged on one side of the backlight module;
the second liquid crystal panel is opposite to the first liquid crystal panel and is arranged on the other side of the backlight module; and
and the printed circuit board is arranged on the backlight module, is electrically connected to the first liquid crystal panel and the second liquid crystal panel and is used for providing a control signal so that the liquid crystal display equipment performs double-sided display by the first liquid crystal panel and the second liquid crystal panel.
Preferably, the liquid crystal display device further includes a heat dissipation base, the upper surface of which includes a connection portion, and the backlight module, the first liquid crystal panel and the second liquid crystal panel are fixed to the heat dissipation base by the connection portion. Furthermore, the lower surface of the heat dissipation base is of a groove structure.
Preferably, the liquid crystal display device further includes a plurality of clips for fixing the first liquid crystal panel and the second liquid crystal panel to the heat dissipation base by clipping. Furthermore, the clamping pieces are respectively positioned at four corners of the backlight module and used for fixing the whole liquid crystal display device.
Preferably, the clamp is of a rubber material.
Preferably, the clamping member is an L-shaped structure, two parallel slits are disposed at two vertical portions of the L-shaped structure, one of the slits is used for inserting the first liquid crystal panel, and the other slit is used for inserting the second liquid crystal panel. Further, an intermediate part is arranged between the two slits and abuts against the optical film of the backlight module.
Preferably, the light guide plate is provided with dots on both surfaces thereof for enhancing double-sided light guiding capability.
By adopting the liquid crystal display equipment, the two liquid crystal panels are respectively arranged at the two opposite sides of the backlight module, and the printed circuit board simultaneously provides a control signal to the first liquid crystal panel and the second liquid crystal panel, so that the liquid crystal display equipment realizes the double-sided display function. In addition, the liquid crystal display device can be also provided with a heat dissipation base, the first liquid crystal panel and the second liquid crystal panel are fixed by the connecting part on the upper surface of the heat dissipation base, and heat dissipation can be conveniently carried out on an LED backlight source in the backlight module.
Drawings
The various aspects of the present invention will become more apparent to the reader after reading the detailed description of the invention with reference to the attached drawings. Wherein,
fig. 1 illustrates an exploded view of a liquid crystal display device according to an embodiment of the present invention;
fig. 2 illustrates an exploded view of the liquid crystal display device of fig. 1;
fig. 3 illustrates an assembled view of the liquid crystal display device of fig. 1; and
fig. 4 shows a perspective view of the clamp of fig. 1.
Detailed Description
In order to make the present disclosure more complete and complete, reference is made to the accompanying drawings, in which like references indicate similar or analogous elements, and to the various embodiments of the invention described below. However, it will be understood by those of ordinary skill in the art that the examples provided below are not intended to limit the scope of the present invention. In addition, the drawings are only for illustrative purposes and are not drawn to scale.
Specific embodiments of various aspects of the present invention are described in further detail below with reference to the accompanying drawings.
Fig. 1, 2 and 3 are exploded and assembled views of a liquid crystal display device according to an embodiment of the invention at different stages. Referring to fig. 1, 2 and 3, the lcd apparatus includes a backlight module 100, liquid crystal panels 102 and 104 and a printed circuit board 103. The backlight module 100 includes a light guide plate 110 and a plurality of optical films 120, and the light guide plate 110 and the optical films 120 are used to provide a backlight source of the liquid crystal display device. It should be noted that, when the conventional liquid crystal display device performs single-sided display, since the backlight is preferably directed to the liquid crystal layer in the liquid crystal module from one direction, a reflective layer is often disposed to reflect the light beam directed to the other direction. However, since the liquid crystal panels 102 and 104 are disposed on two sides of the backlight module 100, and the backlight in the backlight module is directed to the liquid crystal layers of the liquid crystal panels 102 and 104 from two opposite directions, the reflective layer is not required.
The liquid crystal panel 102 is disposed at the front side of the backlight module 100. The liquid crystal panel 104 is disposed opposite to the liquid crystal panel 102 and on the other side of the backlight module 100. The printed circuit board 103 is mounted on the backlight module 100 and electrically connected to the liquid crystal panel 102 and the liquid crystal panel 104 for providing a control signal to enable the liquid crystal display device to perform a dual-sided display through the liquid crystal panel 102 and the liquid crystal panel 104. For example, the control signal is used to control the data lines and/or the scan lines in each liquid crystal panel.
In one embodiment, the lcd apparatus further includes a heat sink base 106, the upper surface of which includes a connection portion 107, and the lcd panel 102 and the lcd panel 104 are fixed to the heat sink base 106 by the connection portion 107, so as to dissipate heat of the LED backlight 108. That is, the heat dissipation base 106 not only can be used for fixing and supporting the liquid crystal panels 102 and 104 and the backlight module 100 thereon, but also can be used for dissipating heat of the LED backlight 108. In addition, in order to improve the heat dissipation efficiency, the heat dissipation base 106 may be made of a metal material, and the heat dissipation base 106 may be provided in the form of a stack of strip-shaped heat dissipation fins. For another example, the bottom surface of the heat sink base 106 may be designed as a groove structure for storing the printed circuit board and/or other electronic components 109 to optimize the appearance of the lcd device.
In another embodiment, the light guide plate 110 of the backlight module 100 has dots disposed on both surfaces thereof for enhancing the double-sided light guiding capability. More specifically, the front side surface of the light guide plate 110 of the backlight module 100 is provided with dots to enhance the light guiding capability of the light beam emitted to the front side from the LED backlight 108; the back surface of the light guide plate 110 of the backlight module 100 is also provided with dots to enhance the light guiding capability of the light beam emitted from the LED backlight 108 to the back side.
The liquid crystal display device further includes a plurality of holders, as indicated by reference numerals 21, 22, 23, and 24 in fig. 2. The liquid crystal panel 102 is fixed to the heat sink base 106 by the clamps 21 to 24. Similarly, the liquid crystal panel 104 is fixed to the heat sink base 106 by these clips 21 to 24.
In one embodiment, the clamping members 21-24 are respectively located at four corners of the backlight module 100 for fixing the whole LCD device. For example, the clamps 21 to 24 are made of rubber material.
Referring to fig. 4, the clips 21-24 are L-shaped structures, and two parallel slits 25 and 26 are disposed at two vertical portions of the L-shaped structures, wherein one slit 25 is used for inserting the liquid crystal panel 102, and the other slit 26 is used for inserting the liquid crystal panel 104. Further, the two slits 25 and 26 have a middle portion 27 therebetween, and the middle portion 27 abuts against the optical film 120 of the backlight module 100.
By adopting the liquid crystal display equipment, the two liquid crystal panels are respectively arranged at the two opposite sides of the backlight module, and the printed circuit board simultaneously provides a control signal to the first liquid crystal panel and the second liquid crystal panel, so that the liquid crystal display equipment realizes the double-sided display function. In addition, the liquid crystal display device can be also provided with a heat dissipation base, the first liquid crystal panel and the second liquid crystal panel are fixed by the connecting part on the upper surface of the heat dissipation base, and heat dissipation can be conveniently carried out on an LED backlight source in the backlight module.
Hereinbefore, specific embodiments of the present invention are described with reference to the drawings. However, those skilled in the art will appreciate that various modifications and substitutions can be made to the specific embodiments of the present invention without departing from the spirit and scope of the invention. Such modifications and substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (9)
1. A liquid crystal display device, characterized in that the liquid crystal display device comprises:
the backlight module comprises a light guide plate and a plurality of optical films, wherein the light guide plate and the optical films are used for providing a backlight source of the liquid crystal display device;
the first liquid crystal panel is arranged on one side of the backlight module;
the second liquid crystal panel is opposite to the first liquid crystal panel and is arranged on the other side of the backlight module; and
and the printed circuit board is arranged on the backlight module, is electrically connected to the first liquid crystal panel and the second liquid crystal panel and is used for providing a control signal so that the liquid crystal display equipment performs double-sided display by the first liquid crystal panel and the second liquid crystal panel.
2. The liquid crystal display apparatus according to claim 1, further comprising a heat dissipation base, wherein an upper surface of the heat dissipation base comprises a connection portion, and the backlight module, the first liquid crystal panel and the second liquid crystal panel are fixed to the heat dissipation base by the connection portion.
3. The liquid crystal display device of claim 2, wherein the lower surface of the heat sink base is a groove structure.
4. The liquid crystal display device according to claim 2, further comprising a plurality of clips for clip-fixing the first liquid crystal panel and the second liquid crystal panel to the heat dissipation base.
5. The LCD apparatus of claim 4, wherein the clips are respectively disposed at four corners of the backlight module for fixing the LCD apparatus.
6. The liquid crystal display apparatus of claim 5, wherein the clip is a rubber material.
7. The apparatus of claim 5, wherein the clamping member is an L-shaped structure, two parallel slits are disposed at two vertical portions of the L-shaped structure, one of the slits is used for inserting the first liquid crystal panel, and the other slit is used for inserting the second liquid crystal panel.
8. The apparatus of claim 7, wherein the two slits have a middle portion therebetween, and the middle portion abuts against the optical film of the backlight module.
9. The liquid crystal display device of claim 1, wherein the light guide plate has dots on both surfaces thereof for enhancing double-sided light guiding capability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101041279A CN102621741A (en) | 2012-04-09 | 2012-04-09 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101041279A CN102621741A (en) | 2012-04-09 | 2012-04-09 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102621741A true CN102621741A (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101041279A Pending CN102621741A (en) | 2012-04-09 | 2012-04-09 | Liquid crystal display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102621741A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104808389A (en) * | 2015-05-18 | 2015-07-29 | 上海启钧电子有限公司 | Integrated double-faced display module structure |
| WO2016172993A1 (en) * | 2015-04-28 | 2016-11-03 | 武汉华星光电技术有限公司 | Display device |
| CN107357071A (en) * | 2017-08-02 | 2017-11-17 | 深圳市华星光电技术有限公司 | A kind of double-sided liquid crystal display device |
| CN110111699A (en) * | 2019-04-25 | 2019-08-09 | 武汉华星光电技术有限公司 | Multifunctional glass |
| CN110161755A (en) * | 2019-06-11 | 2019-08-23 | 江苏毅昌科技有限公司 | A kind of backlight module and liquid crystal display device |
| WO2022198708A1 (en) * | 2021-03-25 | 2022-09-29 | 武汉华星光电技术有限公司 | Display module and display system |
-
2012
- 2012-04-09 CN CN2012101041279A patent/CN102621741A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016172993A1 (en) * | 2015-04-28 | 2016-11-03 | 武汉华星光电技术有限公司 | Display device |
| CN104808389A (en) * | 2015-05-18 | 2015-07-29 | 上海启钧电子有限公司 | Integrated double-faced display module structure |
| CN107357071A (en) * | 2017-08-02 | 2017-11-17 | 深圳市华星光电技术有限公司 | A kind of double-sided liquid crystal display device |
| CN110111699A (en) * | 2019-04-25 | 2019-08-09 | 武汉华星光电技术有限公司 | Multifunctional glass |
| CN110161755A (en) * | 2019-06-11 | 2019-08-23 | 江苏毅昌科技有限公司 | A kind of backlight module and liquid crystal display device |
| WO2022198708A1 (en) * | 2021-03-25 | 2022-09-29 | 武汉华星光电技术有限公司 | Display module and display system |
| US11906886B2 (en) | 2021-03-25 | 2024-02-20 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display module and display system |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120801 |