CN219696063U - Backlight circuit board and display - Google Patents
Backlight circuit board and display Download PDFInfo
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- CN219696063U CN219696063U CN202321359706.8U CN202321359706U CN219696063U CN 219696063 U CN219696063 U CN 219696063U CN 202321359706 U CN202321359706 U CN 202321359706U CN 219696063 U CN219696063 U CN 219696063U
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- 239000004973 liquid crystal related substance Substances 0.000 claims description 27
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 238000003384 imaging method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
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Abstract
The backlight circuit board comprises at least one backlight control chip and at least one light emitting area, wherein each light emitting area comprises light emitting units distributed in an array, each backlight control chip is arranged in the edge area of the backlight circuit board, each backlight control chip is electrically connected with each light emitting unit in the corresponding light emitting area, the number of the backlight control chips is the same as that of the light emitting areas, the backlight circuit board integrates the backlight control chips and the light emitting units contained in the original backlight circuit on one circuit board, the production cost of a backlight control board is saved, the structure of the circuit board is simplified, the line complexity is reduced, the production yield of the circuit board is improved, meanwhile, the backlight circuit board integrates the backlight control chips and the light emitting units on one circuit board, the length of connecting lines between the backlight control chips and the light emitting units is shortened, and the line loss caused by wiring length and the signal interference between the connecting lines are reduced.
Description
Technical Field
The embodiment of the utility model relates to the field of LED display, in particular to a backlight circuit board and a display.
Background
The display system is a system composed of a liquid crystal display panel, a backlight circuit board and a display driving system, wherein the display driving system comprises the backlight driving system and the liquid crystal display driving system, the liquid crystal display driving system drives the liquid crystal display panel to adjust the state of an internal imaging structure according to display data, the backlight driving system drives the backlight circuit board to generate brightness corresponding to the display data, and the backlight circuit projects the bright light to the liquid crystal display panel to generate a corresponding display picture.
The backlight driving system generally comprises a main controller and a backlight control chip, wherein the main controller is electrically connected with the backlight control chip and is used for transmitting backlight brightness signals corresponding to display data to the backlight control chip, the backlight control chip is electrically connected with the LED drivers in the light emitting units on the backlight circuit board and is used for transmitting driving control signals corresponding to the backlight brightness signals to the LED drivers so that the LED drivers can drive the LEDs electrically connected with the LED drivers to emit light according to the driving control signals.
The backlight control chip is configured on an independent backlight control board and is electrically connected with the backlight circuit board through a connecting structure, the connecting structure comprises a flexible flat cable (Flexible Flat Cable, FFC for short), a flexible printed circuit board (Flexible Printed Circuit, FPC for short) or a connector, the electric connection between the backlight control chip and an LED driver on the backlight circuit board is realized through connecting wires arranged on the backlight control board, the backlight circuit board and the connecting structure, so that the circuit laid on the circuit board is complex, and the production yield cannot be guaranteed.
Disclosure of Invention
The utility model provides a backlight circuit board and a display, which are used for solving the technical problems that the circuit of the circuit board layout is complex and the production yield cannot be ensured.
In a first aspect, an embodiment of the present utility model provides a backlight circuit board, including at least one backlight control chip and at least one light emitting area, where each light emitting area includes light emitting units distributed in an array;
each backlight control chip is arranged in the edge area of the backlight circuit board and is electrically connected with each light-emitting unit in the corresponding light-emitting area;
the number of the backlight control chips and the number of the light emitting areas are the same.
In the technical scheme, the backlight circuit board integrates the backlight control chip and the light emitting units contained in the original backlight circuit on one circuit board, so that on the basis of keeping the circuit connection relation between the backlight control chip and each light emitting element in the original backlight driving system, the production cost of the backlight control board is saved, the configuration of connecting wires on the backlight control board and the connecting structure between the backlight control board and the backlight circuit board is also saved, the structure of the circuit board is simplified, the circuit complexity is reduced, the production yield of the circuit board is improved, and meanwhile, the backlight circuit board integrates the backlight control chip and the light emitting units on one circuit board, the length of the connecting wires between the backlight control chip and the light emitting units is shortened, and the line loss caused by wiring length and the signal interference between the connecting wires are reduced.
Optionally, each light emitting unit includes a backlight driving chip and at least one light emitting block;
the backlight driving chip is electrically connected with each light emitting block.
Optionally, each light emitting block includes a plurality of light emitting transistors;
each light emitting transistor is electrically connected with the backlight driving chip.
Optionally, in the same light emitting block, the driving signals obtained by the light emitting transistors are the same;
the driving signals obtained by the light emitting transistors in different light emitting blocks electrically connected with the same backlight driving chip are different.
Optionally, the package form of the backlight control chip is a small package form, and the small package form comprises CSP, COG or BGA.
In the technical scheme, the backlight control chip adopts a small packaging form, so that the frame area for arranging the backlight control chip is small, and the narrow frame characteristic of the display device comprising the backlight circuit board is guaranteed.
Optionally, when the backlight control chip is disposed in the longitudinal edge area of the backlight circuit board, the light emitting units in the light emitting area corresponding to the backlight control chip are connected in series laterally.
Optionally, the backlight circuit board is provided with a plurality of transverse driving wires, and each backlight driving chip in the serially connected light emitting units is electrically connected with one transverse driving wire.
Optionally, when the backlight control chip is disposed in the lateral edge area of the backlight circuit board, light emitting elements in the light emitting area corresponding to the backlight control chip are connected in series longitudinally.
Optionally, the backlight circuit board is provided with a plurality of longitudinal driving wires, and each backlight driving chip in the serially connected light emitting units is electrically connected with one longitudinal driving wire.
In a second aspect, an embodiment of the present utility model provides a display, including a main controller, a liquid crystal panel, and a backlight circuit board related to the first aspect;
the main controller is electrically connected with the liquid crystal panel, and the main controller is electrically connected with the backlight circuit board.
The backlight circuit board comprises at least one backlight control chip and at least one light emitting area, each light emitting area comprises light emitting units distributed in an array, each backlight control chip is arranged in the edge area of the backlight circuit board, each backlight control chip is electrically connected with each light emitting unit in the corresponding light emitting area, the backlight control chips and the light emitting areas are the same in number, the backlight circuit board integrates the light emitting units contained in the backlight control chips and the original backlight circuit on one circuit board, on the basis of keeping the circuit connection relation between the backlight control chips and each light emitting element in the original backlight driving system, the production cost of the backlight control board is saved, the configuration of connecting wires on the backlight control board and the connecting structures between the backlight control board and the backlight circuit board is also saved, the structure of the circuit board is simplified, the complexity of the circuit board is reduced, the circuit board is beneficial to improving the production yield of the circuit board, meanwhile, the backlight circuit board integrates the backlight control chips and the light emitting units on one circuit board, the length of connecting wires between the backlight control chips and the light emitting units is shortened, and the signal loss between the connecting wires and the signal loss caused by the wiring length is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
FIG. 1 is a schematic diagram of an image forming structure of a liquid crystal display device;
fig. 2 is a circuit configuration diagram of a backlight system according to an exemplary embodiment of the present utility model;
fig. 3 is a circuit configuration diagram of a display unit according to an exemplary embodiment of the present utility model;
fig. 4 is a circuit configuration diagram of a backlight circuit board according to an exemplary embodiment of the present utility model;
fig. 5 is a circuit configuration diagram of a backlight circuit board according to another exemplary embodiment of the present utility model;
FIG. 6 is a circuit block diagram of a display system provided in accordance with an exemplary embodiment of the present utility model;
fig. 7 is a circuit configuration diagram of a display system according to another exemplary embodiment of the present utility model.
Specific embodiments of the present utility model have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with aspects of the utility model as detailed in the accompanying claims.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the element defined by the phrase "comprising one … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element, and furthermore, elements having the same name in different embodiments of the utility model may have the same meaning or may have different meanings, the particular meaning of which is to be determined by its interpretation in this particular embodiment or by further combining the context of this particular embodiment.
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The display system is a system composed of an imaging system and a display driving system, the display driving system comprises a backlight driving system and a liquid crystal display driving system, the imaging system comprises a backlight circuit board 10 and a liquid crystal display panel 20, and the positional relationship between the backlight circuit board 10 and the liquid crystal display panel 20 is shown in fig. 1.
In fig. 1, the backlight circuit board 10 is composed of a plurality of light emitting units 101, the liquid crystal display panel 20 is composed of a plurality of liquid crystal display units, the light emitting units 101 and the liquid crystal display units are in corresponding relation, and the light emitting units 101 are positioned at the rear side of the liquid crystal display units to provide backlight for the liquid crystal display units.
The liquid crystal display driving system is a driving system for driving the liquid crystal display panel 20 to display a picture, and drives the liquid crystal display panel 20 to adjust the state of an internal imaging structure thereof according to the obtained display data, and displays the picture when the backlight is obtained. Wherein the display data is data acquired from a master control system of the display.
The backlight control system is a driving system for driving the backlight circuit board 10 to emit backlight corresponding to a display picture, and determines a backlight brightness signal according to display data, and outputs a corresponding driving control signal to the backlight circuit board 10 according to the backlight brightness signal, so that a backlight unit on the backlight circuit board 10 emits corresponding light intensity according to the driving control signal.
The specific circuit configuration of the backlight system is explained in detail below.
Fig. 2 is a circuit structure diagram of a backlight system according to an exemplary embodiment of the present utility model, as shown in fig. 2, the backlight system includes a backlight control system, a backlight circuit board 10 and a connection structure 40, wherein the backlight control system is electrically connected to a first end of the connection structure 40, and the backlight circuit board 10 is electrically connected to a second end of the connection structure 40. The backlight control system generates a driving control signal to transmit driving data to the backlight circuit board 10 through the connection structure 40. The connection structure includes a flexible flat cable (Flexible Flat Cable, abbreviated as FFC), a flexible printed circuit board (Flexible Printed Circuit, abbreviated as FPC), or a connector.
The backlight control system comprises a main controller 30 and at least one control board 20, wherein each control board 20 is provided with a control chip, and the main controller 30 is electrically connected with the control chip through a circuit structure between the main controller and the control board 20 and a connecting wire arranged on the control board 20 and is used for transmitting backlight brightness signals to the control chip.
The backlight circuit board can be divided into at least one backlight display area, and each backlight display area corresponds to each control board one by one. The main controller 20 splits the backlight luminance signal according to each backlight display area to obtain a plurality of backlight luminance sub-signals, and transmits the backlight luminance sub-signals to the control chip on the corresponding control board 20.
The control chip generates a corresponding driving control signal according to the obtained backlight luminance sub-signal, and transmits the driving control signal to the corresponding backlight unit 101.
The backlight unit 101 emits light according to the obtained drive control signal.
The circuit structure of the backlight unit 101, as shown in fig. 3, includes a backlight driving chip 1011 and at least one light emitting block 1012. In one backlight unit 101, a backlight chip 1011 and each light emitting block 1012 are electrically connected.
The backlight driving chip 1011 is electrically connected with the control board 20 through the connection structure 40, and is used for acquiring a driving control signal transmitted by the control board 20, and generating a corresponding driving signal according to the driving control signal. In one embodiment, the backlight driving chip 1011 is an LED driver.
Each light emitting block 1012 is used for acquiring a driving signal and emitting light according to the driving signal. The driving signals comprise pulse width modulation signals (Pulse Width Modulation, PWM for short) and driving current signals, wherein the PWM is used for regulating and controlling the light emitting duration duty ratio of the light emitting block in a frame of light emitting period, and the driving current is used for regulating and controlling the light emitting brightness of the light emitting block in an instant.
The light emitting block 1012 includes a plurality of LEDs, and in one embodiment, the LEDs are electrically connected in parallel. In a light emitting block 1012, the driving signals obtained by the LEDs are the same, and the average light emitting luminance generated according to the driving signals in one frame light emitting period is the same. The LEDs include, but are not limited to, organic light-emitting diodes (OLEDs), mini LEDs, micro-OLEDs.
Since the electrical connection between the backlight control chip 1011 and the LED driver on the backlight circuit board is required to be realized through the connection lines provided on the control board 20, the backlight circuit board 10 and the connection structure 40, the circuit layout on the circuit board is complicated, and the production yield cannot be ensured.
In order to solve the above problems, the present utility model provides a backlight circuit board and a display, which are used for solving the technical problems that the circuit of the circuit board layout is complex and the production yield cannot be guaranteed. The technical conception of the utility model is as follows: the backlight control chip and the light emitting units contained in the original backlight circuit are integrated on the same circuit board, on the basis of keeping the circuit connection relation between the backlight control chip and each light emitting element in the original backlight driving system, the production cost of the backlight control board is saved, the structure of the circuit board is simplified, the line complexity is reduced, the production yield of the circuit board is improved, meanwhile, the backlight control chip and the light emitting units are integrated on the same circuit board by the backlight circuit board, the length of a connecting line between the backlight control chip and the light emitting units is shortened, and the line loss caused by wiring length and the signal interference between the connecting lines are reduced.
The circuit structure of the backlight circuit board provided by the present utility model is explained below.
Fig. 4 is a schematic circuit structure of a backlight circuit board according to an exemplary embodiment of the present utility model.
As shown in fig. 4, the backlight circuit board 10 includes at least one backlight control chip 201 and at least one light emitting region, wherein the number of the backlight control chips 201 and the light emitting regions are the same, and each backlight control chip 201 and each light emitting region are in one-to-one correspondence.
The light emitting region is disposed in a display region of the liquid crystal display device, and the backlight control chip 201 is disposed in a non-display region of the liquid crystal display device, that is, in a frame region of the liquid crystal display device.
The backlight control chip 201 is disposed in the edge region 102 of the backlight circuit board, and in one embodiment, as shown in fig. 4, the backlight control chip 201 is disposed in the lower edge region of the backlight circuit board 10; in another embodiment, the backlight control chip 201 may also be disposed at the upper side edge region of the backlight circuit board 10.
That is, the backlight control chips 201 are disposed in a lateral edge region of the backlight circuit board, and each of the backlight control chips 201 is arranged in the lateral direction in the edge region 102 of the backlight circuit board.
The package form of the backlight control chip 201 is a small package form including a chip scale package (Chip Scale Package, abbreviated as CSP), a Chip On Glass (COG), or a ball grid array package (Ball Grid Array Package, abbreviated as BGA).
The backlight control chip adopts a small packaging form, so that the area for arranging the backlight control chip is small, and the narrow frame characteristic of the display device comprising the backlight circuit board is guaranteed.
Each light-emitting region is provided with a plurality of light-emitting units 101 distributed in an array. The backlight control chip 201 is electrically connected to each light emitting unit 101 in the corresponding light emitting region.
In the circuit structure shown in fig. 4, since the backlight control chip 201 is disposed in the lateral edge region of the backlight circuit board, the light emitting units 101 are electrically connected in series in the longitudinal direction, and a plurality of (for example, 6) adjacent light emitting units connected in series form one light emitting region, and each row of light emitting units is electrically connected to one backlight control chip 201.
Each backlight control chip 201 is configured to obtain a backlight luminance sub-signal transmitted by the master controller, and generate a driving control signal corresponding to each light emitting unit 101 in the corresponding light emitting area according to the backlight luminance sub-signal.
The backlight control chip 201 transmits the above-described driving control signal to the corresponding light emitting unit 101 through a connection line arranged on the backlight circuit board 10.
The light emitting unit 101 adjusts its light emission luminance according to the driving control signal obtained therefrom.
The circuit structure of the light emitting unit 101 includes a backlight driving chip 1011 and at least one light emitting block 1012 as shown in fig. 3, and the backlight driving chip 1011 and each light emitting block 1012 are electrically connected.
Each backlight driving chip 1011 is used for obtaining driving data transmitted by the backlight control chip 201, the driving data comprises a plurality of driving sub-data, and each driving sub-data is in a corresponding relationship with each light emitting block electrically connected with the backlight driving chip 1011.
The backlight driving chip 1011 generates a corresponding driving signal according to the driving sub-data, and transmits the driving signal to the corresponding light emitting block 1012. In the process of generating the driving signals, the backlight driving chip 1011 generates the driving signals corresponding to the light emitting blocks 1012 independently, and the driving signals do not affect each other.
In the light emitting block 1012, a plurality of light emitting transistors are included, and in one light emitting block 1012, signals obtained by the light emitting transistors are the same, and thus, light emission intensities of the light emitting transistors in one frame display period are the same.
The light emitting transistor is any transistor device capable of emitting light. Including but not limited to: OLED, mini LED.
In the different light-emitting blocks 1012, if the driving sub-data corresponding to each light-emitting block 1012 obtained by the backlight driving chip 1011 is the same, the driving signals obtained by each light-emitting block 1012 are the same; if the driving sub-data corresponding to each light emitting block 1012 obtained by the backlight driving chip 1011 is different, the driving signals obtained by each light emitting block 1012 are different.
In the circuit configuration of the light emitting units 101 connected in series, the backlight driving chips 1011 are connected in series to one connection line.
More specifically, in the circuit connection relationship shown in fig. 4, one end of the backlight driving chip 1011 in the light emitting unit 101 located at the lowermost side is electrically connected to one output terminal of the backlight control chip 201, the other end of the backlight driving chip 1011 is electrically connected to the backlight driving chip in another light emitting unit 101 located in the same column adjacent thereto, and so on, up to the uppermost backlight control chip 201 in the light emitting region.
When the backlight control chip 201 transmits a driving control signal to the backlight driving chips 1011 connected in series, the backlight control chip 201 transmits a data packet including driving control signals corresponding to each backlight driving chip 1011 connected in series to the backlight driving chip 1011 connected directly thereto, the backlight driving chip 1011 removes the driving control signal corresponding to the data packet therefrom, and transmits a remaining driving control signal including the driving control signal to the next backlight driving chip 1011 connected directly thereto until the last backlight driving chip 1011 removes the last driving control signal in the data packet.
After each backlight control chip 201 takes out its corresponding drive control signal from the data packet, the light emitting transistor is driven to emit light in accordance with the drive signal.
Fig. 5 is a schematic circuit diagram of another backlight circuit board according to an exemplary embodiment of the present utility model.
As shown in fig. 5, the backlight circuit board 10 includes at least one backlight control chip 201 and at least one light emitting region. Each light emitting region includes a plurality of rows of light emitting cells 101 connected in series.
The backlight control chip 201 is disposed in the edge region 102 of the backlight circuit board, and in one embodiment, as shown in fig. 5, the backlight control chip 201 is disposed in the left edge region of the backlight circuit board 10; in another embodiment, the backlight control chip 201 may also be disposed in the right edge region of the backlight circuit board 10.
That is, the backlight control chips 201 are disposed at a longitudinal edge region of the backlight circuit board 10, in which the respective backlight control chips 201 are arranged in a longitudinal direction. The packaging of the backlight control chip 201 is already explained in the embodiment shown in fig. 4, and will not be described here again.
Since the backlight control chip 201 is disposed in the longitudinal edge region of the backlight circuit board 10, the light emitting units 101 are electrically connected in series in the lateral direction, and a plurality of adjacent light emitting units 101 connected in series form one light emitting region, and each row of light emitting units is electrically connected to one backlight control chip 201.
The circuit structure of the light emitting units 101, the connection relationship between the light emitting units 101, and the circuit connection relationship between the light emitting units 101 and the backlight control chip 201 connected in series are explained in detail in the embodiment corresponding to fig. 4, and are not described herein again.
In the technical scheme, the backlight control chip is integrated in the backlight circuit board, so that the backlight control chip only needs to utilize the connecting wires arranged on the backlight circuit board to transmit driving control signals to each light-emitting unit, does not need to reuse the connecting wires on the control board and the connecting wires on the connecting structure, correspondingly, does not need to be configured to place the backlight control chip when the backlight driving system is generated, does not need to set the connecting structure between the control board and the backlight circuit board, not only simplifies the structure of the backlight driving system, but also simplifies the complexity of the circuit laid on the circuit board in the backlight driving system, reduces the circuit structure which is easy to cause problems in the production process, and is beneficial to improving the yield of the generation.
In addition, because the backlight control chip and the light emitting units are integrated on the same backlight circuit board, compared with an original backlight driving system formed by the control board and the backlight circuit board, the length of connecting wires between the backlight control chip and each light emitting unit is shortened, and the line loss and the signal interference between the connecting wires caused by the wiring length of the circuit board are reduced.
The circuit configuration of the display system including the above-described backlight circuit board is explained below.
Fig. 6 is a circuit configuration diagram of a display system according to an exemplary embodiment of the present utility model, which includes a main controller 20 and a backlight circuit board 10 according to the embodiment corresponding to fig. 4.
The main controller 20 is electrically connected to the backlight circuit board 10, more specifically, the main controller 20 is electrically connected to each backlight control chip 201 in the backlight circuit board 10, and is configured to obtain an image signal from a main control system or an external circuit of the display, generate a backlight luminance signal from the image signal, split the backlight luminance signal into one or more backlight luminance sub-signals according to the division of the light emitting area in the backlight circuit board 10, and transmit the backlight luminance sub-signals to the corresponding backlight control chips 201, so that the backlight control chips 201 generate driving control signals according to the backlight luminance sub-signals.
The driving process of each backlight control chip 201 is explained in detail in the above embodiments, and will not be repeated here.
In addition, the display system further comprises a liquid crystal panel electrically connected with the main controller 30, wherein the main controller 20 is used for acquiring an image signal, generating a corresponding LCD control signal according to the image signal, and controlling the liquid crystal panel to display a corresponding picture by utilizing the LCD control signal.
Fig. 7 is a circuit configuration diagram of a display system according to another exemplary embodiment of the present utility model, which includes a main controller 20, a backlight circuit board 10 and a liquid crystal panel according to the embodiment corresponding to fig. 5.
The circuit connection relationship of the display system shown in fig. 7 is the same as that shown in fig. 6, and the functions of the devices are the same, and will not be described here again.
The present utility model also provides a display, which includes the display system shown in fig. 6 or fig. 7, wherein the circuit structure of the display system is explained in detail in the above embodiments, and will not be repeated herein.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (10)
1. The backlight circuit board is characterized by comprising at least one backlight control chip and at least one light-emitting area, wherein each light-emitting area comprises light-emitting units distributed in an array;
each backlight control chip is arranged in the edge area of the backlight circuit board and is electrically connected with each light-emitting unit in the corresponding light-emitting area;
the number of the backlight control chips and the number of the light emitting areas are the same.
2. The backlight circuit board according to claim 1, wherein each of the light emitting units includes a backlight driving chip and at least one light emitting block;
the backlight driving chip is electrically connected with each light emitting block.
3. The backlight circuit board of claim 2, wherein each of the light emitting blocks comprises a plurality of light emitting transistors;
each light emitting transistor is electrically connected with the backlight driving chip.
4. A backlight circuit board according to claim 3, wherein,
in the same light-emitting block, driving signals obtained by the light-emitting transistors are the same;
the driving signals obtained by the light emitting transistors in different light emitting blocks electrically connected with the same backlight driving chip are different.
5. A backlight circuit board according to any one of claims 1 to 4, wherein the package form of the backlight control chip is a small package form including CSP, COG or BGA.
6. The backlight circuit board of claim 1, wherein when the backlight control chip is disposed in a longitudinal edge region of the backlight circuit board, light emitting units in light emitting regions corresponding to the backlight control chip are laterally connected in series.
7. The backlight circuit board of claim 6, wherein a plurality of lateral drive lines are provided on the backlight circuit board, and each backlight drive chip in the serially connected light emitting units is electrically connected to one lateral drive line.
8. The backlight circuit board of claim 1, wherein when the backlight control chip is disposed in a lateral edge region of the backlight circuit board, light emitting elements in light emitting regions corresponding to the backlight control chip are connected in series in a longitudinal direction.
9. The backlight circuit board according to claim 8, wherein a plurality of longitudinal driving wires are provided on the backlight circuit board, and each backlight driving chip in the serially connected light emitting units is electrically connected with one longitudinal driving wire.
10. A display comprising a main controller, a liquid crystal panel, and the backlight circuit board of any one of claims 1 to 9;
the main controller is electrically connected with the liquid crystal panel, and the main controller is electrically connected with the backlight circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321359706.8U CN219696063U (en) | 2023-05-30 | 2023-05-30 | Backlight circuit board and display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321359706.8U CN219696063U (en) | 2023-05-30 | 2023-05-30 | Backlight circuit board and display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219696063U true CN219696063U (en) | 2023-09-15 |
Family
ID=87938851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321359706.8U Active CN219696063U (en) | 2023-05-30 | 2023-05-30 | Backlight circuit board and display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219696063U (en) |
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2023
- 2023-05-30 CN CN202321359706.8U patent/CN219696063U/en active Active
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