KR20110071034A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
- Publication number
- KR20110071034A KR20110071034A KR1020090127599A KR20090127599A KR20110071034A KR 20110071034 A KR20110071034 A KR 20110071034A KR 1020090127599 A KR1020090127599 A KR 1020090127599A KR 20090127599 A KR20090127599 A KR 20090127599A KR 20110071034 A KR20110071034 A KR 20110071034A
- Authority
- KR
- South Korea
- Prior art keywords
- light
- liquid crystal
- crystal display
- display panel
- guide plate
- Prior art date
Links
Images
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
- 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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0026—Wavelength selective element, sheet or layer, e.g. filter or grating
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- 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
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
-
- 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
- G02F1/133528—Polarisers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention discloses a liquid crystal display device capable of improving visibility.
The disclosed liquid crystal display device includes a liquid crystal display panel, a light source disposed under the liquid crystal display panel to provide light to the liquid crystal display panel, a light guide plate disposed in parallel with the light source to convert point light into surface light, and a liquid crystal display. A first polarizing plate provided on the upper surface of the panel and a second polarizing plate provided between the light source and the light guide plate.
Description
The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device that can improve the visibility.
Cathode ray tube (CRT), one of the widely used display devices, is mainly used for monitors such as TVs, measuring devices, and information terminal devices, but the size and weight of electronic products are reduced due to the weight and size of CRT itself. Could not actively respond to the response.
As a solution to this problem, the liquid crystal display device has a tendency that its application range is gradually widening due to the features such as light weight, thinning, low power consumption driving. Accordingly, in order to meet the needs of users, liquid crystal display devices are progressing in the direction of large area, thinning, and low power consumption.
BACKGROUND ART A liquid crystal display device is a display device that displays an image by controlling an amount of light passing through a liquid crystal, and is widely used for advantages such as thinning and low power consumption.
Unlike the CRT, the liquid crystal display is not a display device that emits light by itself, and thus, a backlight unit including a separate light source is provided on the back of the liquid crystal display panel to provide light for visually representing an image.
The liquid crystal display panel has a structure in which the thin film transistor substrate and the color filter substrate are disposed to face each other, and the thin film transistor substrate and the color filter substrate are bonded by a seal pattern, and then liquid crystal is injected therebetween.
Upper and lower polarizers are attached to upper and lower portions of the liquid crystal display panel to control light transmission.
Recently, when a liquid crystal display is provided outdoors with high illumination, a transflective method using external light and internal light has been developed.
The transflective liquid crystal display device is divided into a reflection area having a reflection layer for reflecting external light for each pixel of the liquid crystal display panel, and a transmission area displayed by using a backlight unit. Selectively driven.
However, the transflective liquid crystal display device selectively divides one pixel into a reflection area and a transmission area to selectively drive, thereby reducing transmittance and visibility.
In addition, a general liquid crystal display device has a complicated process such as a stepped part process and a divided alignment process of pixels divided into a reflection area and a transmission area to implement a reflection mode and a transmission mode.
An object of the present invention is to provide a liquid crystal display device capable of improving visibility.
Liquid crystal display device according to an embodiment of the present invention,
A liquid crystal display panel; A light source disposed under the liquid crystal display panel to provide light to the liquid crystal display panel; A light guide plate disposed in parallel with the light source and converting point light into surface light; A first polarizer provided on an upper surface of the liquid crystal display panel; And a second polarizing plate provided between the light source and the light guide plate.
In the liquid crystal display according to the exemplary embodiment of the present invention, a first polarizing plate is provided on an upper surface of the liquid crystal display panel, and a second polarizing plate is provided between the light source and the light guide plate so that one pixel is not divided into a transmission and a reflection area. The structure uses the entire pixel as a transmissive and reflective region, and has an advantage of improving transmittance as compared with a general transflective liquid crystal display.
That is, the present invention has the advantage that the visibility can be improved by simultaneously using the external light and the light of the backlight unit without dividing the pixel into the transmission and reflection areas.
In addition, the present invention has a structure that can eliminate the complicated process such as the step portion process and the segmentation orientation divided into a reflection area and a transmission area for each pixel in order to implement a reflection mode and a transmission mode image display of a general transflective liquid crystal display device As a result, the process of the liquid crystal display device can be simplified.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 is an exploded perspective view illustrating a liquid crystal display according to an exemplary embodiment of the present invention, FIG. 2 is a view illustrating paths of external light and internal light in one pixel, and FIG. 3 is a liquid crystal display according to reflection and transmission. Simulation graph showing the operation of the device.
As shown in FIG. 1 and FIG. 2, the liquid crystal display according to the exemplary embodiment of the present invention is provided with a liquid
The liquid crystal display of the present invention further includes a
Although not shown in detail, the liquid
In the thin
The
The
A gate driving printed circuit board (114) for supplying a scan signal to a gate line is provided at an edge of the liquid
The gate and
The
The
The second polarizing
That is, only the first light polarized by the second polarizing
The first light incident on the
The first light incident on the liquid
Meanwhile, the external light is incident on the
The second light is reflected by the
Here, the first and second light polarized from the first and second polarizing
The liquid crystal display of the present invention displays an image by using external light (for example, sunlight) and light of the
Referring to the operation of the liquid crystal display of the present invention with respect to one pixel, the second light polarized through the first polarizing
That is, the second light is reflected to the entire surface of the pixel by using external light, thereby displaying the entire image of the pixel.
The first light polarized by the
In the pixel of the present invention, the first light and the second light in which the light of the external light and the
Referring to FIG. 3, when the entire pixel is used as a reflection and transmission region, and the external light and the light of the
As described above, in the liquid crystal display according to the exemplary embodiment of the present invention, a first polarizing
That is, the present invention has the advantage that the visibility can be improved by simultaneously using the external light and the light of the
In addition, the present invention can omit a complicated process such as a step difference process and a divided orientation divided into a reflection area and a transmission area for each pixel in order to implement a reflection mode and a transmission mode image display of a general transflective liquid crystal display device. As a result, the process of the liquid crystal display device can be simplified.
Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.
1 is an exploded perspective view illustrating a liquid crystal display according to an exemplary embodiment of the present invention.
2 is a diagram illustrating a path of external light and internal light in one pixel.
3 is a simulation graph illustrating an operation of a liquid crystal display according to reflection and transmission.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090127599A KR20110071034A (en) | 2009-12-20 | 2009-12-20 | Liquid crystal display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090127599A KR20110071034A (en) | 2009-12-20 | 2009-12-20 | Liquid crystal display device |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20110071034A true KR20110071034A (en) | 2011-06-28 |
Family
ID=44402300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020090127599A KR20110071034A (en) | 2009-12-20 | 2009-12-20 | Liquid crystal display device |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20110071034A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20130037600A (en) * | 2011-10-06 | 2013-04-16 | 엘지디스플레이 주식회사 | Smart window display |
-
2009
- 2009-12-20 KR KR1020090127599A patent/KR20110071034A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20130037600A (en) * | 2011-10-06 | 2013-04-16 | 엘지디스플레이 주식회사 | Smart window display |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9256023B2 (en) | Backlight module and liquid crystal display device using same | |
CN100385309C (en) | Liquid crystal display device using dual light units | |
TWI403802B (en) | Backlight assembly provided with an improved light guiding plate and a display device provided with the same | |
US20140176852A1 (en) | Liquid crystal display device | |
US20110141398A1 (en) | Transflective liquid crystal display device | |
US7898612B2 (en) | Liquid crystal display device with wiring structure | |
KR101719817B1 (en) | Liquid crystal display device | |
KR20140115045A (en) | Liquid Crystal Display Device with Narrow Bezel Area | |
JP2019012116A (en) | Display device | |
KR20130067632A (en) | Liquid crystal display device | |
KR20130029680A (en) | Liquid crystal display device and method of fabricating the same | |
US20240069385A1 (en) | Optical membrane, backlight module and display device | |
KR20180028624A (en) | Liquid crystal display device | |
KR20130133619A (en) | Image display device | |
JP2018163315A (en) | Display | |
KR102020933B1 (en) | Glass diffusion plate, backlight unit using the glass diffusion plate, and liquid crystal display using the backlight unit | |
KR20180077940A (en) | Borderless display device | |
KR101952190B1 (en) | Display device and method for manufacturing the same | |
KR20110071034A (en) | Liquid crystal display device | |
KR20120087409A (en) | Backlight Unit | |
KR20120075115A (en) | Light guide plate, backlight unit having the same and liquid crystal display device and method thereof | |
JP2012138255A (en) | Surface light-emitting device and display device | |
KR101292582B1 (en) | back light assembly and liquid crystal display module using thereof | |
KR20150062796A (en) | Display device having direct type backlight unit and method for fabricating the same | |
KR20140035113A (en) | Liquid crystal display apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Withdrawal due to no request for examination |