CN208569259U - Can local dimming display equipment - Google Patents
Can local dimming display equipment Download PDFInfo
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- CN208569259U CN208569259U CN201821215114.8U CN201821215114U CN208569259U CN 208569259 U CN208569259 U CN 208569259U CN 201821215114 U CN201821215114 U CN 201821215114U CN 208569259 U CN208569259 U CN 208569259U
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- light source
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- backboard
- local dimming
- light
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Abstract
The utility model is suitable for display equipment technical field, provide it is a kind of can local dimming display equipment, including display screen, shell, backlight module and control circuit board, the backlight module includes multiple light sources, backboard and light guide plate, and multiple light sources are equidistantly evenly distributed on backboard towards on the side of display screen.Compared with prior art, multiple light sources are by being equidistantly evenly distributed on backboard towards on the side of display screen by the utility model, and the brightness uniformity of display equipment can be improved on uniform irradiation to display screen in the light that multiple light sources issue；Each light source is electrical connected with control circuit board respectively, i.e., control circuit board can individually control each light source, and the local dimming, it can be achieved that display equipment is controlled by the light source to different location on backboard, and high dynamic range images display effect is good；Reflection processing is carried out by the light that light guide plate can issue multiple light sources, is made on light uniform irradiation to display screen, so that the display effect of display equipment is good.
Description
Technical field
The utility model is suitable for display equipment technical field, more specifically, be related to it is a kind of can local dimming it is aobvious
Show equipment.
Background technique
Liquid crystal display (LCD, Liquid Crystal Display) has become the flat-panel display device of mainstream, however by
Do not have luminous characteristic in liquid crystal itself, backlight becomes the indispensable important component of liquid crystal display, backlight
Performance directly determine the display effect of liquid crystal display.
The backlight of light emitting diode (LED, Light Emitting Diode) as LCD is often used at present, is divided into
Two kinds of structures of side entering type and straight-down negative.Side entering-type LED backlight source is generally used for the LCD of small-medium size, direct LED backlight one
As be used for large-sized LCD.However, the LED backlight of either side entering type or straight-down negative, multiple LED are by same electricity
Road control turns on or off, and can not carry out local dimming, HDR (High-Dynamic Range, high dynamic range to LCD with regard to this
Enclose image) display effect it is poor.
Utility model content
The purpose of this utility model is to provide it is a kind of can local dimming display equipment, to solve to exist in the prior art
Liquid crystal display can not carry out local dimming, the problem of high dynamic range images display effect difference.
In order to achieve the above purposes, the technical solution adopted by the utility model is: provide it is a kind of can the display of local dimming set
It is standby, including display screen, the shell that is used to support the display screen, for illuminating the display screen to show the backlight module of image
With the control circuit board for controlling the backlight module, the display screen is electrical connected with the control circuit board, the back
Optical mode group is electrical connected with the control circuit board, and the display screen, the backlight module and the control circuit board are set to
On the shell, the backlight module includes multiple light sources and the backboard for being used to support each light source, multiple described light sources etc.
Spacing is evenly distributed on side of the backboard towards the display screen, and each light source is electric with the control circuit board respectively
Property be connected；The backlight module further includes light guide plate, and the light guide plate is set between the backboard and the display screen.
Further, multiple light sources are arranged in multiple lines and multiple rows, and the spacing between light source described in adjacent rows is equal to phase
Spacing between the two column light source of neighbour.
Further, the position that each light source is corresponded on the backboard is equipped with pedestal, and each light source is mounted on correspondence
On the pedestal.
Further, each pedestal is square configuration, each light source in the section in the vertical base thickness direction
Set on the middle position of the correspondence pedestal, the side size range of each pedestal is 1mm-5mm.
Further, the side length of each pedestal is 1mm.
Further, the cross section of the backboard is consistent with the cross section of the light guide plate.
Further, the backlight module further includes reflector plate, and the reflector plate is set to the backboard and the light guide plate
Between, the reflector plate is set on the shell.
Further, the cross section of the backboard is consistent with the cross section of the reflector plate.
Further, the backlight module further includes optical diaphragm, and the optical diaphragm is set to the display screen and described
Between light guide plate, the optical diaphragm is set on the shell.
Further, the cross section of the light guide plate is consistent with the cross section of the optical diaphragm.
It is provided by the utility model can the beneficial effect of display equipment of local dimming be: compared with prior art, this
Multiple light sources by being equidistantly evenly distributed on backboard towards the light that on the side of display screen, multiple light sources are issued by utility model
The brightness uniformity of display equipment can be improved on uniform irradiation to display screen；Each light source respectively with control circuit board electrical property phase
Even, i.e., control circuit board can individually control each light source, be controlled by the light source to different location on backboard, can
Realize the local dimming to display equipment, high dynamic range images display effect is good；Multiple light sources can be issued by light guide plate
Light carry out reflection processing, make on light uniform irradiation to display screen so that display equipment display effect it is good.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 be it is provided by the embodiment of the utility model can local dimming display equipment structural schematic diagram；
Fig. 2 is the structural schematic diagram of light source provided by the embodiment of the utility model and backboard；
Fig. 3 is the enlarged diagram in Fig. 2 at A；
Fig. 4 is the structural schematic diagram of light source provided by the embodiment of the utility model and pedestal.
Wherein, each attached drawing main mark in figure:
1- shell；11- accommodating cavity；
2- backlight module；21- light source；22- backboard；221- pedestal；23- light guide plate；24- reflector plate；25- optical diaphragm.
Specific embodiment
In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the description of the present invention, it should be understood that term " center ", " length ", " width ", " thickness ",
The orientation of the instructions such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description,
Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements or the interaction relationship of two elements.For those of ordinary skill in the art and
Speech, can understand the concrete meaning of above-mentioned term in the present invention as the case may be.
Also referring to Fig. 1 to Fig. 4, now to it is provided by the embodiment of the utility model can local dimming display equipment carry out
Explanation.The display equipment includes that display screen (attached drawing is not shown), shell 1, backlight module 2 and control circuit board are (attached not shown
Out).Display screen, backlight module 2 and control circuit board are arranged on shell 1, and display screen and control circuit board are electrically connected, control
Circuit board processed and backlight module 2 are electrically connected.Backlight module 2 includes multiple light sources 21 and the backboard for being used to support each light source 21
22, multiple light sources 21 are equidistantly evenly distributed on backboard 22 towards on the side of display screen, each light source 21 respectively with control circuit
Plate is electrically connected.The backlight module 2 further includes light guide plate 23, which is arranged between backboard 22 and display screen.Backboard
The light that multiple light sources 21 issue on 22 through the light guide plate after 23 reflections can uniform irradiation to display screen so that the display effect of display equipment
Fruit is good.
Specifically, light source 21 is preferably white LED lamp, and the production cost of LED light is compared to OLED (Organic Light-
Emitting Diode, Organic Light Emitting Diode) want low, so as to reduce the production cost of display equipment.
Specifically, backboard 22 is preferably made of aluminum material.Aluminum material has excellent heating conduction, on backboard 22
The heat that control circuit board generates can be distributed through backboard 22, so that the good heat dissipation effect of display equipment.
Preferably, side of the backboard 22 towards display screen is arranged in light guide plate 23, and control circuit board setting is carried on the back in backboard 22
To the side of display screen, display screen, light guide plate 23, backboard 22 and control circuit board are successively set in order on shell 1.This knot
Structure shows the easy to assembly quick of equipment, and structure design is more frivolous.
It is provided by the utility model can local dimming display equipment, compared with prior art, the utility model pass through by
Multiple light sources 21 are equidistantly evenly distributed on backboard 22 towards on the side of display screen, and the light that multiple light sources 21 issue can uniformly shine
It is incident upon on display screen, the brightness uniformity of display equipment can be improved；Each light source 21 is electrical connected with control circuit board respectively, that is, controls
Circuit board processed can individually control each light source 21, be controlled by the light source 21 to different location on backboard 22, can
Realize the local dimming to display equipment, high dynamic range images display effect is good；It can be to multiple light sources 21 by light guide plate 23
The light of sending carries out reflection processing, makes on light uniform irradiation to display screen, so that the display effect of display equipment is good.
Further, referring to Figure 2 together and Fig. 3, as it is provided by the embodiment of the utility model can local dimming it is aobvious
Show that a kind of specific embodiment of equipment, multiple light sources 21 are arranged in multiple lines and multiple rows, the spacing etc. between adjacent rows light source 21
Spacing between adjacent two column light source 21.Specifically, multiple light sources 21 are divided into multiple lines and multiple rows, the multiple light sources in every a line
21 proper alignments, multiple light sources 21 in each column also proper alignment.Spacing between adjacent rows light source 21 is H, adjacent two
Spacing between column light source 21 is also H.The range of spacing H is 5mm-15mm.Preferably, spacing H is 10mm.This structure is led to
It crosses and multiple light sources 21 is equidistantly evenly distributed on backboard 22 towards on the side of display screen, control circuit board can be to each light
Source 21 is individually controlled, therefore can carry out local dimming to display screen.For example, when display screen peripheral brightness it is brighter or compared with
When dark, the light source 21 for irradiating the region can be closed or be opened, and then the corresponding region of display screen dimmed, high dynamic
The display effect of range image is good.
Above-mentioned control circuit board is equipped with the main control unit for controlling every line light source 21 respectively, and each main control unit further includes
For controlling multiple sub-control units of each light source 21 in corresponding row, each sub-control unit respectively with the light source 21 of corresponding every row
It is electrically connected.In this way, main control unit can realize the connection and disconnection of every line light source 21, the controllable corresponding row of each sub-control unit
In each light source 21 connection and disconnection.This structure, the connection and disconnection of every line light source 21 are flexible and changeable, and display equipment can be improved
The display effect of high dynamic range images is also convenient for safeguarding every line light source 21.
Alternatively, above-mentioned control circuit board is equipped with the main control unit for controlling each column light source 21 respectively, each main control unit
Further include multiple sub-control units for controlling each light source 21 in respective column, each sub-control unit respectively with corresponding each column
Light source 21 is electrically connected.In this way, main control unit can realize the connection and disconnection of each column light source 21, each sub-control unit is controllable
The connection and disconnection of each light source 21 in respective column.This structure, the connection and disconnection of each column light source 21 are flexible and changeable, and display can be improved
The display effect of the high dynamic range images of equipment is also convenient for safeguarding each column light source 21.
Certainly, in other embodiments, the spacing between adjacent rows light source 21 can also be greater than adjacent two column light source 21
Between spacing or adjacent rows light source 21 between spacing might be less that the spacing between adjacent two column light source 21,
This is not limited uniquely.According to the intensity of illumination and illuminating area of light source 21, the spacing between light source 21 can be adjusted,
The usage amount of light source 21 can be reduced, manufacturing cost is reduced.
Further, referring to Figure 2 together and Fig. 3, as it is provided by the embodiment of the utility model can local dimming it is aobvious
Show a kind of specific embodiment of equipment, the position that each light source 21 is corresponded on backboard 22 is equipped with pedestal 221, and each light source 21 is mounted on
On corresponding pedestal 221.Specifically, multiple pedestals 221 are divided into multiple lines and multiple rows, 221 proper alignment of multiple pedestals in every a line,
Multiple pedestals 221 in each column also proper alignment.Spacing between adjacent rows pedestal 221 is H, adjacent two column pedestal 221
Between spacing be also H.The range of spacing H is 5mm-15mm.Preferably, spacing H is 10mm.This structure passes through pedestal 221
Can by each light source 21 support fix, light source 21 it is quick and easy for installation.
Said base 221 is preferably that aluminum material is made.Aluminium has excellent heating conduction, generates in 21 course of work of light source
Heat can be distributed through pedestal 221, and then the service life of light source 21 can be extended.
It is provided on pedestal 221 through-hole (attached drawing is not shown), light source 21 is preferably the LED light of round end, and each light source 21 is arranged
In the through-hole of corresponding pedestal 221, it is fixed on pedestal 221 by modes such as welding, bonding, riveting, clampings.This structure, light
The installation accuracy in source 21 is high, easy to operate；Light source 21 may pass through through-hole, quickly with control that 22 other side of backboard is set
Circuit board is electrically connected.
Pedestal 221 can be an integral molding structure with backboard 22, and processing efficiency is high.Pedestal 221 can also pass through weldering
It the modes such as connects, be bonded, riveting, being clamped to be fixedly mounted on backboard 22, convenient for the maintenance to light source 21.
In other embodiments, pedestal 221 can also be made of other materials；Light source 21 or other types of hair
Body of light does not limit uniquely herein.
Further, referring to Figure 4 together, as it is provided by the embodiment of the utility model can local dimming display equipment
A kind of specific embodiment, each pedestal 221 is square configuration, each light source in the section of vertical 221 thickness direction of pedestal
21 are set to the middle position of corresponding pedestal 221, and the side size range of each pedestal 221 is 1mm-5mm.Specifically, the bottom surface of pedestal 221
It is connected with backboard 22 towards the side of display screen by the modes such as welding, being bonded, the opposite face opposite with bottom surface and backboard 22 are flat
Row, and be spaced a distance between the opposite face and backboard 22.The center of the opposite face at the center and pedestal 221 of 21 bottom surface of light source
It is overlapped, and light source 21 is located on the opposite face in the projection on pedestal 221；Opposite face of the light source 21 perpendicular to corresponding pedestal 221
The plane at place.Preferably, the side length L of each pedestal 221 is 1mm.The phase of corresponding pedestal 221 is arranged in light source 21 by this structure
The middle position on opposite when control circuit board controls light source 21, is conducive to show so that the irradiated area of each light source 21 is consistent
The local dimming of screen.In other embodiments, pedestal 221 or other configurations；Light source 21 also can be set in corresponding base
At the other positions of seat 221；The side length of pedestal 221 can also be adjusted according to needs of production, not limit uniquely herein
It is fixed.
Further, also referring to Fig. 1, as it is provided by the embodiment of the utility model can local dimming display equipment
A kind of specific embodiment, the cross section of backboard 22 is consistent with the cross section of light guide plate 23.This structure, light guide plate 23 can will be carried on the back
Plate 22 is blocked towards the side of display screen so that multiple light sources 21 issue light can through the light guide plate 23 reflective homogeneous expose to it is aobvious
In display screen, so that the display effect of display equipment is good.
Further, also referring to Fig. 1, as it is provided by the embodiment of the utility model can local dimming display equipment
A kind of specific embodiment, backlight module 2 further includes reflector plate 24, the reflector plate 24 be set to backboard 22 and light guide plate 23 it
Between, which is set on shell 1.Specifically, shell 1 has hollow accommodating cavity 11, and the periphery of the accommodating cavity 11 opens up
There is card slot, display screen, light guide plate 23, reflector plate 24 and backboard 22 are successively set in the card slot of the accommodating cavity 11.This structure,
Reflector plate 24 is arranged between light guide plate 23 and backboard 22, the light that the multiple light sources 21 on backboard 22 issue first passes through reflector plate
24 reflection processing, can make the light uniformity for exposing to light guide plate 23, handle using the secondary reflection of light guide plate 23, can
Keep the light effects for exposing to display screen good, shows that the display effect of equipment is good.
Further, also referring to Fig. 1, as it is provided by the embodiment of the utility model can local dimming display equipment
A kind of specific embodiment, the cross section of backboard 22 is consistent with the cross section of reflector plate 24.This structure, reflector plate 24 can will be carried on the back
Plate 22 is blocked towards the side of display screen, so that the light that multiple light sources 21 issue can be exposed to through the reflective homogeneous of reflector plate 24 and be led
On tabula rasa 23, is handled using the secondary reflection of light guide plate 23, the light effects for exposing to display screen can be made good, show equipment
Display effect is good.
Further, also referring to Fig. 1, as it is provided by the embodiment of the utility model can local dimming display equipment
A kind of specific embodiment, backlight module 2 further includes optical diaphragm 25, the optical diaphragm 25 be set to display screen and light guide plate 23
Between, optical diaphragm 25 is set on shell 1.Specifically, shell 1 has hollow accommodating cavity 11, and the periphery of the accommodating cavity 11 is opened
Equipped with card slot, display screen, optical diaphragm 25, light guide plate 23 and backboard 22 are successively set in the card slot of the accommodating cavity 11.This
Optical diaphragm 25 is arranged between light guide plate 23 and display screen structure, and the light that the multiple light sources 21 on backboard 22 issue first passes through
The reflection processing for crossing light guide plate 23, can make the light uniformity for exposing to optical diaphragm 25, using the two of optical diaphragm 25
Secondary reflection or refraction processing, can make the light effects for exposing to display screen good, show that the display effect of equipment is good.
Further, also referring to Fig. 1, as it is provided by the embodiment of the utility model can local dimming display equipment
A kind of specific embodiment, the cross section of light guide plate 23 is consistent with the cross section of optical diaphragm 25.This structure, optical diaphragm 25
Light guide plate 23 can be blocked towards the side of display screen so that multiple light sources 21 issue light can through the light guide plate 23 reflective homogeneous
It exposes on optical diaphragm 25, is handled using the secondary reflection of optical diaphragm 25 or refraction, the light for exposing to display screen can be made
Line effect is good, shows that the display effect of equipment is good.
Shell 1 has hollow accommodating cavity 11, and the periphery of the accommodating cavity 11 offers card slot, display screen, optical diaphragm 25,
Light guide plate 23, reflector plate 24 and backboard 22 are successively set in the card slot of the accommodating cavity 11.This structure, it is multiple on backboard 22
Single treatment of the light through reflector plate 24 that light source 21 issues, then 23 secondary treatment through the light guide plate, most afterwards through optical diaphragm 25
After handling three times, on uniform irradiation to display screen, so that the display effect of display equipment is good.
Control circuit board can control the operating power size of each light source 21.There are three types of different operating function for the tool of light source 21
Rate: 1, small-power, power 0.06W；2, middle power, power bracket 0.2W-0.5W；3, high power, power >=1W.Light source 21
It works under different power, the intensity of illumination that light source 21 issues is different.Under small-power work, the light emission luminance of light source 21 is most
It is low；Under high-power operation, the light emission luminance highest of light source 21.
Specifically, power tune can be carried out to each light source 21 of corresponding row for controlling the main control unit of every line light source 21
Section, and then the intensity of illumination of every line light source 21 is controlled, corresponding each sub-control unit can be to corresponding light source in every row
21 carry out power regulation.
Alternatively, the main control unit for controlling each column light source 21 can carry out power regulation to each light source 21 of respective column,
And then the intensity of illumination of each column light source 21 is controlled, corresponding each sub-control unit can to light source 21 corresponding in each column into
Row power regulation.
This structure effectively further can carry out area to display equipment by three kinds of different operating modes of light source 21
Domain light modulation, the display effect of good dimming effect, high dynamic range images is good, and colour gamut, refresh rate, Comprehensive Correlation degree etc., which have, obviously to be mentioned
It is high.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. can local dimming display equipment, including display screen, the shell that is used to support the display screen, described aobvious for illuminating
Display screen is to show the backlight module of image and the control circuit board for controlling the backlight module, the display screen and the control
Circuit board processed is electrical connected, and the backlight module is electrical connected with the control circuit board, the display screen, the backlight module
It is set on the shell with the control circuit board, it is characterised in that: the backlight module includes multiple light sources and is used to prop up
The backboard of each light source is supportted, multiple light sources are equidistantly evenly distributed on side of the backboard towards the display screen
On, each light source is electrical connected with the control circuit board respectively；The backlight module further includes light guide plate, the light guide plate
Between the backboard and the display screen.
2. as described in claim 1 can local dimming display equipment, it is characterised in that: multiple light sources be in multiple lines and multiple rows
It is arranged, the spacing between light source described in adjacent rows is equal to the spacing between the adjacent two column light source.
3. as described in claim 1 can local dimming display equipment, it is characterised in that: each light is corresponded on the backboard
The position in source is equipped with pedestal, and each light source is mounted on the corresponding pedestal.
4. as claimed in claim 3 can local dimming display equipment, it is characterised in that: each pedestal is in the vertical pedestal
The section of thickness direction is square configuration, and each light source is set to the middle position of the corresponding pedestal, each pedestal
Side size range is 1mm-5mm.
5. as claimed in claim 4 can local dimming display equipment, it is characterised in that: the side length of each pedestal be 1mm.
6. as described in claim 1 can local dimming display equipment, it is characterised in that: the cross section of the backboard with it is described
The cross section of light guide plate is consistent.
7. as described in claim 1 can local dimming display equipment, it is characterised in that: the backlight module further include reflection
Piece, the reflector plate are set between the backboard and the light guide plate, and the reflector plate is set on the shell.
8. as claimed in claim 7 can local dimming display equipment, it is characterised in that: the cross section of the backboard with it is described
The cross section of reflector plate is consistent.
9. as described in claim 1 can local dimming display equipment, it is characterised in that: the backlight module further includes optics
Diaphragm, the optical diaphragm are set between the display screen and the light guide plate, and the optical diaphragm is set on the shell.
10. as claimed in claim 9 can local dimming display equipment, it is characterised in that: the cross section of the light guide plate with
The cross section of the optical diaphragm is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821215114.8U CN208569259U (en) | 2018-07-26 | 2018-07-26 | Can local dimming display equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821215114.8U CN208569259U (en) | 2018-07-26 | 2018-07-26 | Can local dimming display equipment |
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| Publication Number | Publication Date |
|---|---|
| CN208569259U true CN208569259U (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821215114.8U Active CN208569259U (en) | 2018-07-26 | 2018-07-26 | Can local dimming display equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108681151A (en) * | 2018-07-26 | 2018-10-19 | 合肥惠科金扬科技有限公司 | Can local dimming display equipment |
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2018
- 2018-07-26 CN CN201821215114.8U patent/CN208569259U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108681151A (en) * | 2018-07-26 | 2018-10-19 | 合肥惠科金扬科技有限公司 | Can local dimming display equipment |
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