CN106980209A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN106980209A CN106980209A CN201710407824.4A CN201710407824A CN106980209A CN 106980209 A CN106980209 A CN 106980209A CN 201710407824 A CN201710407824 A CN 201710407824A CN 106980209 A CN106980209 A CN 106980209A
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- light emitting
- emitting diode
- liquid crystal
- crystal display
- display device
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- 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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133612—Electrical details
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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)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
This application discloses liquid crystal display device, including driving chip, backing structure and metal support component；Backing structure includes flexible PCB, and flexible PCB includes being provided with multiple light emitting diodes in luminous zone, luminous zone；Flexible PCB includes the first external part and the second external part, and the first external part includes the port that at least one is used to electrically connect with driving chip, and the second external part includes conduction region；The ground wire of luminous zone is provided around on flexible PCB, ground wire is electrically connected with conduction region, and conduction region is electrically connected with metal support component.The liquid crystal display device can conduct the electrostatic on backing structure periphery to the metal support component of liquid crystal display device, and reduce electrostatic buildup causes the breakdown risk of light emitting diode on flexible PCB, can realize good electrostatic protection effect.
Description
Technical field
The application is related to display technology field, and in particular to technical field of liquid crystal display, more particularly to a kind of liquid crystal display
Device.
Background technology
Liquid crystal display device, because there is the advantages such as low-power consumption, high-resolution, low cost to be applied more and more widely for it
Show in related every field.Liquid crystal display device generally includes the light emitting diode (Light as backlight
Emitting Diode, LED) lamp bar, LED light bar by flexible PCB (Flexible Printed Circuit, FPC) and
It is welded on the LED compositions on FPC.
The driving chip of liquid crystal display device to LED power when, easily produce electrostatic.Existing LED light bar is not grounded
Design, the electrostatic convergence product of generation causes LED to be wounded in LED light bar, and then liquid crystal display device is not shown normally
Show.
The content of the invention
In order to solve the problem of above-mentioned background section is mentioned, the embodiment of the present application provides liquid crystal display device.
The liquid crystal display device that the embodiment of the present application is provided, including driving chip, backing structure and metal support component；
Backing structure includes flexible PCB, and flexible PCB includes being provided with multiple light emitting diodes in luminous zone, luminous zone；Flexible electrical
Road plate includes the first external part and the second external part, and the first external part includes the end that at least one is used to electrically connect with driving chip
Mouthful, the second external part includes conduction region；The ground wire of luminous zone is provided around on flexible PCB, ground wire is electrically connected with conduction region
Connect, conduction region is electrically connected with metal support component.
The liquid crystal display device that the embodiment of the present application is provided, includes leading by setting on the flexible PCB of backing structure
Second external part in electric area, and conduction region is electrically connected with metal support component, can driving chip powered to light emitting diode
When the electrostatic that produces conduct to the second external part, and then electrostatic is conducted to the metal support component of liquid crystal display device, reduction
Electrostatic buildup causes the breakdown risk of light emitting diode on flexible PCB, can realize good electrostatic protection effect
Really.
Brief description of the drawings
Non-limiting example is described in detail with reference to what the following drawings was made by reading, other features,
Objects and advantages will become more apparent upon：
Fig. 1 is a structural representation of the liquid crystal display device of the embodiment of the present application；
Fig. 2 is a structural representation of the backing structure of liquid crystal display device shown in Fig. 1；
Fig. 3 is a cross-sectional view of the backing structure shown in Fig. 2 along hatching line AA '；
Fig. 4 is the structural representation of one embodiment of the liquid crystal display device of the application；
Fig. 5 is the structural representation of another embodiment of the liquid crystal display device of the application；
Fig. 6 is the structural representation of another embodiment of the liquid crystal display device of the application；
Fig. 7 is a structural representation of the circuit in backing structure shown in Fig. 2.
Embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that, in order to
Be easy to description, illustrate only in accompanying drawing to about the related part of invention.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 is refer to, it illustrates the liquid crystal display device of the embodiment of the present application a structural representation.
As shown in figure 1, liquid crystal display device 100 include liquid crystal display panel 11, driving chip 12, backing structure 13 and
Metal support component 14.Wherein, driving chip 12 can be arranged on liquid crystal display panel 11, and driving chip 12 is used for liquid crystal
Circuit structure in display panel 11 is powered and controls the circuit structure in liquid crystal display panel 11 to work, also, driving chip
12 electrically connect with backing structure 13, are additionally operable to power to backing structure 13.Metal support component 14 can be used to support liquid crystal
The metal parts of display panel 100, metal support component 14 can have larger surface area.
It should be noted that above-mentioned liquid crystal display panel 11 can include array base palte, color membrane substrates and positioned at array
Liquid crystal layer between substrate and color membrane substrates.And array base palte and color membrane substrates can be using existing liquid crystal display panels
Structure is designed, and in order to avoid the emphasis of unnecessary fuzzy the application, the application is not repeated this.
Fig. 2 is refer to, it illustrates a structural representation of the backing structure 13 of liquid crystal display device 100 shown in Fig. 1.
As shown in Fig. 2 backing structure can include flexible PCB 20.Flexible PCB 20 is included in luminous zone 201, luminous zone 201
Provided with multiple light emitting diode D1, each light emitting diode D1 is used for the backlight for providing liquid crystal display device.Flexible PCB 20 is also
Including the first external part 202 and the second external part 203.First external part 202, which includes at least one, to be used to be electrically connected with driving chip
The port 2021 connect.Specifically, the port 2021 electrically connected with driving chip includes the end powered to each light emitting diode D1
Mouthful.Second external part 203 includes conduction region 2031, and alternatively, conduction region 2031 can be by being made on flexible PCB 20
Metal material is formed.
The ground wire 2011 around luminous zone 201 is additionally provided with flexible PCB 20, the ground wire 2011 and second stretches out
The conduction region 2031 at end 203 is electrically connected, and conduction region 2031 is electrically connected with the metal support component of liquid crystal display device.
In the present embodiment, the ground wire 2011 around luminous zone 201 can supply driving chip to light emitting diode D1
The electrostatic produced when electric is conducted to conduction region 2031, then transmits electrostatic to the metal of liquid crystal display device by conduction region 2031
Support member.
With continued reference to Fig. 3, a cross-sectional view it illustrates backing structure shown in Fig. 2 along hatching line AA '.As schemed
Shown in 3, in some embodiments of the present application, flexible PCB includes copper foil 32 and positioned at the both sides of copper foil 32 and glued with copper foil
Base material 31,33.Base material 31 and 33 can be made using materials such as polyimides (PI).
As shown in figure 3, cross-section structure of the backing structure along hatching line AA ' includes five parts, respectively A1, A2, A3, A4, A5,
The port 2021 of wherein A1 the first external parts 202 of correspondence, A2 the first external parts 202 of correspondence are not provided with the region of port 2021, A3
In a part of region of correspondence ground wire 2011, a part of region of A4 correspondence conduction regions 2031, A5 the second external parts 203 of correspondence
A part of region outside conduction region.
From figure 3, it can be seen that in the present embodiment, port 2021, ground wire 2011 and conduction on flexible PCB
The copper foil in area 2031 is exposed, i.e. the base material of the copper foil side of port 2021, ground wire 2011 and conduction region 2031 can be shelled
From.So, the above-mentioned structure for including port, ground wire and conduction region directly can be formed using flexible PCB, without extra
Increase for forming port, ground wire or the conductive layer of conduction region, be conducive to simplifying manufacture craft.
Fig. 4 is refer to, it illustrates the structural representation of one embodiment of the liquid crystal display device of the application.At this
In, it illustrate only the schematic side view of the liquid crystal display device part-structure relevant with backing structure.
In the present embodiment, liquid crystal display device 400 includes driving chip (not shown), backing structure and metal support
Part.Herein, metal support component includes backlight metal frame 44.Backlight metal frame 44 can be the materials such as iron, aluminium alloy, copper
Framework, for supporting, protecting backing structure, and the intensity of liquid crystal display device can be increased.
In the present embodiment, backing structure can be the structure shown in Fig. 2, including flexible PCB 43.Flexible PCB
43 include being provided with multiple light emitting diodes 410 in luminous zone, luminous zone.Also, flexible PCB 43 can be included around luminous
The ground wire in area and the second external part 431, the second external part 431 include conduction region 403.The conduction region 403 and ground wire electricity
Connect, and the conduction region 403 is bonded by conducting resinl 45 with backlight metal frame 44.
It should be noted that the second external part 431 of flexible PCB 43 can be bent so that conduction region 403 can be with
Backlight metal frame 44 is close and is bonded by conducting resinl 45.
In a further embodiment, above-mentioned conduction region 403 deviates from the side of light emitting diode 410 in backlight metal frame 44
Bonded with backlight metal frame 44.In this manner it is ensured that backlight metal frame 44 can be provided surely towards the side of light emitting diode 410
Fixed support, it is to avoid conduction region 403 is bonded in backlight metal frame 44 towards the side of light emitting diode 410 with backlight metal frame 44
A part for Shi Zhanyong backlights metal frame 44 is used to support the structure of flexible PCB to make the stability of strutting system of backlight metal frame 44
Decline.
Above-mentioned conducting resinl 45 can electrically connect conduction region 403 with backlight metal frame 44, and then ground wire and backlight is golden
Belong to frame electrical connection, so, the electrostatic around light emitting diode 410 can be transmitted by ground wire to backlight metal frame 44, so as to
Influence is produced on LED operation electric current effectively to shield electrostatic, accumulation of static electricity can also be avoided to cause light emitting diode
It is breakdown.
In some optional implementations of embodiment, as shown in figure 4, each light emitting diode 410 can be welded in it is soft
Property circuit board 43 a side surface, conduction region 403 is located at same side surface with light emitting diode 410.Also, flexible PCB
46 another side surface is fixed with shading rubber belt 46.Liquid crystal display device 400 can also be welded including being arranged at flexible PCB 43
Be connected to a side surface of light emitting diode 410 light guide plate 47, positioned at light guide plate 47 towards the side of flexible PCB 43 liquid crystal
Display screen 41 and the reflector plate 48 for deviating from the side of flexible PCB 43 positioned at light guide plate 47.Shading rubber belt 46 is used to block luminous two
The light that pole pipe 410 is sent to the direction perpendicular to the surface of light guide plate 47, it is to avoid liquid crystal display device light leak；Light guide plate 47 is used for will
The light diffusion that light emitting diode 410 is sent, makes the brightness for being incident to LCDs uniform；Reflector plate 48 is used for incidence
Light to light guide plate bottom is reflexed in light guide plate, with improving luminous efficiency, can reduce the power consumption of backing structure.
Fig. 5 is refer to, it illustrates the structural representation of another embodiment of the liquid crystal display device of the application.Equally
Ground, Fig. 5 illustrate only the schematic side view of the liquid crystal display device part-structure relevant with backing structure.
In the present embodiment, liquid crystal display device 500 includes driving chip (not shown), backing structure and metal support
Part.In the present embodiment, metal support component includes metal chassis 54.Metal chassis 54 can be the materials such as iron, aluminium alloy, copper
The casing of matter, the internal structure for protecting liquid crystal display device.
In the present embodiment, backing structure can be the structure shown in Fig. 2, including flexible PCB 53.Flexible PCB
53 include being provided with multiple light emitting diodes 510 in luminous zone, luminous zone.Also, flexible PCB 53 can be included around luminous
The ground wire in area and the second external part 531, the second external part 531 include conduction region 503.The conduction region 503 and ground wire electricity
Connect, and the conduction region 503 is bonded by conducting resinl 55 with metal chassis 54.
It should be noted that the second external part 531 of flexible PCB 53 can be bent so that conduction region 503 can be with
Backlight metal frame 54 is close and is bonded by conducting resinl 55.
Above-mentioned conducting resinl 55 can electrically connect conduction region 503 with metal chassis 54, and then by ground wire and metal chassis
54 electrical connections, so, the electrostatic around light emitting diode 510 can be transmitted by ground wire to metal chassis 54, so as to have
Effect ground shielding electrostatic produces influence to LED operation electric current, and accumulation of static electricity can also be avoided to cause light emitting diode to be hit
Wear.Also, when in the liquid crystal display device applied to hand-held, the electrostatic in metal chassis can be conducted by human body to ground
Face, it is ensured that electric charge will not largely accumulate in metal chassis and influence the normal work of liquid crystal display device inner member.
In a further embodiment, above-mentioned conduction region 503 metal chassis 54 towards the side of flexible PCB 53 with
Metal chassis is bonded.In this manner it is ensured that conduction region 503 and the stability of the electrical connection of metal chassis 54.
With liquid crystal display device shown in Fig. 4 similarly, in some optional implementations of the present embodiment, each luminous two
Pole pipe 510 can be welded in a side surface of flexible PCB, and conduction region 503 is located at the same side table with light emitting diode 510
Face.Also, another side surface of flexible PCB 53 is fixed with shading rubber belt 56.Liquid crystal display device 500 can also include setting
Be placed in flexible PCB 53 be welded with light emitting diode 510 a side surface light guide plate 57, positioned at light guide plate 57 towards flexibility
The LCDs 51 of the side of circuit board 53 and the reflector plate 58 for deviating from the side of flexible PCB 53 positioned at light guide plate 57.Shading glue
It is used to block the light that light emitting diode 510 is sent to the direction perpendicular to the surface of light guide plate 57 with 56, it is to avoid liquid crystal display device
Light leak；The light that light guide plate 57 is used to send light emitting diode 510 spreads, and makes the brightness for being incident to LCDs equal
It is even；Reflector plate 58 is used to reflex to the light for being incident to light guide plate bottom in light guide plate, can reduce the back of the body with improving luminous efficiency
The power consumption of photo structure.
With continued reference to Fig. 6, it illustrates the structural representation of another embodiment of the liquid crystal display device of the application.Together
Sample, Fig. 6 illustrate only the schematic side view of the liquid crystal display device part-structure relevant with backing structure.
In the present embodiment, liquid crystal display device 600 includes driving chip (not shown), backing structure, metal support
Part and metal clips 65.In the present embodiment, metal support component includes metal chassis 64.Metal chassis 64 can for iron,
The casing of the materials such as aluminium alloy, copper, the internal structure for protecting liquid crystal display device.
In the present embodiment, backing structure can be the structure shown in Fig. 2, including flexible PCB 63.Flexible PCB
63 include being provided with multiple light emitting diodes 610 in luminous zone, luminous zone.Also, flexible PCB 63 can be included around luminous
The ground wire in area and the second external part 631, the second external part 631 include conduction region 603.The conduction region 603 and ground wire electricity
Connect, and the conduction region 603 and metal chassis 64 are in contact with metal clips 65.
Above-mentioned metal clips 65 can electrically connect conduction region 603 with metal chassis 64, and then by ground wire and metal machine
Shell 64 is electrically connected, so, and the electrostatic around light emitting diode 610 can be transmitted by ground wire to metal chassis 64, so as to
Effectively realize the electrostatic protection to light emitting diode.Also, when in the liquid crystal display device applied to hand-held, metal machine
Electrostatic on shell can be conducted by human body to ground, it is ensured that electric charge will not largely accumulate in metal chassis and influence liquid crystal
The normal work of showing device inner member.
In a further embodiment, as shown in fig. 6, metal clips 65 can be arranged at the conduction of the second external part 631
Between area 603 and metal chassis 64, the second external part 631 can be bent so that conduction region 603 and metal chassis 64 are mutually close,
And then ensure that metal clips 603 stably can electrically connect metal chassis 64 and conduction region 603.
It should be noted that Fig. 6 schematically show only the shape and structure of metal clips 65, in concrete implementation
In, metal clips can be full slice system, latticed or with other shapes, the shape of the embodiment of the present application not to metal clips
Make special restriction with structure.
With liquid crystal display device shown in Fig. 4 and Fig. 5 similarly, in some optional implementations of the present embodiment, respectively
Light emitting diode 610 can be welded in a side surface of flexible PCB 63, and conduction region 603 is located at and light emitting diode 610
Same side surface.Also, another side surface of flexible PCB 63 is fixed with shading rubber belt 66.Liquid crystal display device 600 may be used also
With including be arranged at flexible PCB 63 be welded with light emitting diode 610 a side surface light guide plate 67, positioned at light guide plate 67
Deviate from the reflector plate of the side of flexible PCB 63 towards the LCDs 61 of the side of flexible PCB 63 and positioned at light guide plate 67
68.Shading rubber belt 66 is used to block the light that light emitting diode 610 is sent to the direction perpendicular to the surface of light guide plate 67, it is to avoid liquid crystal
Display device light leak；The light that light guide plate 67 is used to send light emitting diode 610 spreads, and makes the light for being incident to LCDs
Brightness uniformity；Reflector plate 68 be used for the light for being incident to light guide plate bottom is reflexed in light guide plate, can with improving luminous efficiency,
Reduce the power consumption of backing structure.
From unlike embodiment illustrated in fig. 5, the liquid crystal display device 600 of the present embodiment is electrically connected using metal clips 65
Conduction region 603 and metal chassis 64 are connect, metal clips 65 has certain rigidity, can provide certain to flexible PCB 63
Auxiliary support, so as to lift the stability of liquid crystal display device internal structure.
In the various embodiments described above, the light emitting diode on flexible PCB needs to be powered by driving chip.Below in conjunction with
Fig. 7 further describes the power supply mode of the light emitting diode on the flexible PCB of the embodiment of the present application.
Fig. 7 shows a structural representation of the circuit in backing structure shown in Fig. 2, namely shows the back of the body shown in Fig. 2
Light emitting diode D1, ground wire, the electrical block diagram of the first external part 202 in photo structure.
As shown in fig. 7, with the luminous zone of flexible PCB provided with 9 light emitting diode D71, D72, D73, D74, D75,
Exemplified by D76, D77, D78, D79.Being arranged at the port of the first external part includes a first input port I and multiple second inputs
Port K1, K2, K3, multiple light emitting diodes include the multiple light emitting diode groups being connected in parallel to each other, each light emitting diode group bag
Include positive input terminal, negative input end and the multiple light emitting diodes being connected between positive input terminal and negative input end.Such as Fig. 7
In, 9 light emitting diodes are divided into three groups, wherein, D71, D74 and D77 belong to same light emitting diode group, D72, D75 and D78
Belong to same light emitting diode group, D73, D76 and D79 belong to same light emitting diode group.In each light emitting diode group
The positive pole of first light emitting diode is electrically connected with the positive input terminal of the light emitting diode group, last light emitting diode it is negative
Pole is electrically connected with the negative input end of the light emitting diode group.First luminous two for example in Fig. 7 in three light emitting diode groups
Pole pipe D71, D72, D73 positive pole correspond with the positive input terminal of three light emitting diode groups electrically connect respectively, and three light
The negative input of the negative pole of last light emitting diode D77, D78, D79 in diode group respectively with three light emitting diode groups
End corresponds electrical connection.
In the present embodiment, the positive input terminal of each light emitting diode group is electrically connected with first input port I, each light-emitting diodes
The negative input end of pipe group is corresponded with each second input port K1, K2, K3 and electrically connected.That is, each light emitting diode group
In first light emitting diode positive pole be connected in first input port I, each light emitting diode group last hair
The negative pole of optical diode is corresponded with second input port K1, K2, K3 and electrically connected.
Further, flexible PCB also includes an input lead 710 and each light emitting diode group is more correspondingly
Bar input signal cable 701,702,703, with the one-to-one a plurality of output signal line 704,705,706 of each light emitting diode group with
And for connecting a plurality of connecting line of the two neighboring light emitting diode in same light emitting diode group.Input lead 710 and
One input port I is electrically connected, and each input signal cable 701,702,703 electrically connects 710 with input lead so that each light emitting diode
First light emitting diode D71, D72, D73 of group pass through input signal cable 701,702,703 and first input port I electricity respectively
Connection.
The negative input end of each light emitting diode group passes through corresponding output signal line 704,705,706 and corresponding each second
Input port K1, K2, K3 correspond electrical connection so that last light emitting diode D77 of each light emitting diode group, D78,
D79 is electrically connected by output signal line 704,705,706 with corresponding second input port respectively.
In the present embodiment, input lead 710, each input signal cable 701,702,703, each output signal line 704,705,
706 and each connecting line be respectively positioned in luminous zone.So, the ground wire of flexible display panels can shield exterior static to for
To the input lead 710 of each Organic Light Emitting Diode transmission signal, each input signal cable 701,702,703, each output signal line
704th, 705,706 and each connecting line interfere.
Above-mentioned first input port I, second input port K1, K2, K3 are electrically connected with driving chip.In power supply, driving
Chip can provide high level signal to first input port, and low level signal is provided to second input port K1, K2, K3, and
And the voltage difference between the high level signal and low level signal is more than the conducting voltage of each light emitting diode, you can so that each hair
Optical diode is lighted, and backlight is provided for liquid crystal display device.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology of the particular combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, is carried out by above-mentioned technical characteristic or its equivalent feature
Other technical schemes formed by any combination.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical characteristic of energy carries out technical scheme formed by replacement mutually.
Claims (11)
1. a kind of liquid crystal display device, it is characterised in that including driving chip, backing structure and metal support component；
The backing structure includes flexible PCB, and the flexible PCB is included in luminous zone, the luminous zone provided with multiple
Light emitting diode；
The flexible PCB include the first external part and the second external part, first external part include at least one be used for
The port of the driving chip electrical connection, second external part includes conduction region；
The ground wire of the luminous zone is provided around on the flexible PCB, the ground wire is electrically connected with the conduction region,
The conduction region is electrically connected with the metal support component.
2. liquid crystal display device according to claim 1, it is characterised in that the metal support component includes backlight metal
Frame；
The conduction region is bonded by conducting resinl and the backlight metal frame.
3. liquid crystal display device according to claim 2, it is characterised in that the conduction region is carried on the back in the backlight metal frame
Side from the light emitting diode is bonded with the backlight metal frame.
4. liquid crystal display device according to claim 1, it is characterised in that the metal support component includes metal machine
Shell；
The conduction region is bonded by conducting resinl and the metal chassis.
5. liquid crystal display device according to claim 4, it is characterised in that the conduction region is in the metal chassis direction
The side of the flexible PCB is bonded with the metal chassis.
6. liquid crystal display device according to claim 1, it is characterised in that the metal support component includes metal machine
Shell, the liquid crystal display device also includes metal clips；
The conduction region and the metal chassis are in contact with the metal clips.
7. the liquid crystal display device according to claim any one of 1-6, it is characterised in that
The flexible PCB includes copper foil and the base material glued positioned at copper foil both sides and with copper foil；The port, the ground connection
The copper foil of line and the conduction region is exposed.
8. the liquid crystal display device according to claim any one of 1-6, it is characterised in that the port includes one first
Input port and multiple second input ports；
The multiple light emitting diode includes the multiple light emitting diode groups being connected in parallel to each other, and each light emitting diode group includes
Positive input terminal, negative input end and the multiple light emitting diodes being connected between the positive input terminal and the negative input end, its
In the anode of first light emitting diode in each light emitting diode group electrically connected with the positive input terminal, each light-emitting diodes
The negative electrode of Guan Zuzhong last light emitting diode is electrically connected with the negative input end；
The positive input terminal of each light emitting diode group is electrically connected with the first input port, each light emitting diode group
Negative input end is corresponded with each second input port and electrically connected.
9. liquid crystal display device according to claim 8, it is characterised in that the flexible PCB also includes an input
Lead, with the one-to-one a plurality of input signal cable of each light emitting diode group, with a pair of each light emitting diode group 1
The a plurality of output signal line answered and a plurality of company for connecting the two neighboring light emitting diode in same light emitting diode group
Wiring；
The input lead is electrically connected with the first input port, and each input signal cable is electrically connected with the input lead
Connect；
The negative input end of each light emitting diode group passes through corresponding output signal line and corresponding each second input
Mouth corresponds electrical connection；
The input lead, each input signal cable, each output signal line and each connecting line are located at the hair
In light area.
10. the liquid crystal display device according to claim any one of 1-6, it is characterised in that each light emitting diode weldering
It is connected to a side surface of the flexible PCB.
11. liquid crystal display device according to claim 10, another side surface of the flexible PCB is fixed with shading
Adhesive tape；
The liquid crystal display device also includes being arranged at the side surface that the flexible PCB is welded with the light emitting diode
Light guide plate, deviate from positioned at the light guide plate towards the LCDs of the flexible PCB side and positioned at the light guide plate
The reflector plate of the flexible PCB side.
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| CN201710407824.4A CN106980209B (en) | 2017-06-02 | 2017-06-02 | Liquid crystal display device having a plurality of pixel electrodes |
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| CN201710407824.4A CN106980209B (en) | 2017-06-02 | 2017-06-02 | Liquid crystal display device having a plurality of pixel electrodes |
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| CN106980209B CN106980209B (en) | 2020-05-19 |
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