KR101593375B1 - Array structure of uhd display board for error and uhd display board therewith - Google Patents

Array structure of uhd display board for error and uhd display board therewith Download PDF

Info

Publication number
KR101593375B1
KR101593375B1 KR1020150106297A KR20150106297A KR101593375B1 KR 101593375 B1 KR101593375 B1 KR 101593375B1 KR 1020150106297 A KR1020150106297 A KR 1020150106297A KR 20150106297 A KR20150106297 A KR 20150106297A KR 101593375 B1 KR101593375 B1 KR 101593375B1
Authority
KR
South Korea
Prior art keywords
unit
backlight
circuit
signal
display board
Prior art date
Application number
KR1020150106297A
Other languages
Korean (ko)
Inventor
박웅기
Original Assignee
박웅기
주식회사 하이스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 박웅기, 주식회사 하이스코 filed Critical 박웅기
Priority to KR1020150106297A priority Critical patent/KR101593375B1/en
Application granted granted Critical
Publication of KR101593375B1 publication Critical patent/KR101593375B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The present invention relates to an arrangement structure of a UHD display board including: a processor unit for processing an image signal to be provided to a display panel; a backlight unit voltage amplification circuit for providing an amplified drive signal for driving a backlight bar which provides backlight to the display panel; and a memory unit required to process the image signal by the processor unit. The backlight unit voltage amplification circuit is arranged on a left side of the processor unit to be separated from the processor unit at a certain distance. The memory unit is arranged on a right side of the processor unit to be separated from the processor unit at a certain distance to reduce influence of the backlight unit voltage amplification circuit.

Description

TECHNICAL FIELD [0001] The present invention relates to a layout structure of a UHD display board and an UHD display board having the UHD display board.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a layout structure of a UHD display board, and more particularly, to an arrangement structure of a UHD display board, An arrangement of an improved UHD display board and a UHD display board having such an arrangement structure.

Ultra-High Definition (UHD) is a next-generation high-definition resolution with a resolution / pixel four times higher than Full-HD and can be used as wide as 4 full-HD screens at once, , It is convenient to work with multiple windows, and it is mainly used for high-end gaming laptops and high-end business laptops that need to perform various tasks at the same time. In general, HD (High Definition) class is about 1 million pixels (resolution: 1366 X 768), Full-HD class is about 2 million pixels (resolution: 1920 X 1080), UHD class is about 8 million pixels 3840 X 2160).

As described above, a UHD display board is employed to provide an image having super-high resolution, and a UHD display board is provided with a backlight unit voltage amplifying circuit for providing an ultra-high quality image through a display panel, A processor unit for processing the video signal to be provided and a memory unit for exchanging video signals to be processed by the processor unit with the processor unit.

In such a UHD display board, an arrangement of a UHD display board for reducing interference or noise between a voltage amplifying circuit and a memory unit of a backlight unit and a system error by a processor unit in a layout structure centering on a processor unit, .

Korean Registered Patent No. 10-1218371 (Registered on December 26, 2012) Korean Patent Publication No. 10-2004-0142110 (published on December 11, 2014)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a UHD display board capable of preventing interference or noise between a voltage amplifying circuit of a backlight unit and a memory unit, And a layout structure of a UHD display board capable of reducing system errors caused by the processor unit.

Further, the present invention is characterized in that a plurality of wirings between the processor unit and the memory unit all have the same wiring length so as to be advantageous in impedance matching in wiring between the processor unit and the memory unit, and unnecessary oscillation, noise, And to provide a layout structure of a UHD display board capable of reducing a flicker phenomenon.

According to an aspect of the present invention, there is provided an arrangement structure of a UHD display board, the UHD display board including a processor unit for processing a video signal to be provided to a display panel, an amplifying unit for driving a backlight bar And a UHD display board mounted with a memory unit required for processing a video signal of the processor unit, the UHD display board comprising: a plurality of UHD display boards arranged on a left side of the processor unit, The backlight unit voltage amplifying circuit is disposed and the memory unit is disposed on the right side of the processor unit so as to be spaced apart from each other by a predetermined distance in order to reduce the influence from the backlight unit voltage amplifying circuit.

According to one embodiment, for impedance matching between the processor unit and the memory unit, a plurality of wires between the processor unit and the memory unit, each of the plurality of wires being connected to the processor unit- Electrically connect the connection points on the memory unit side - have the same wiring length, and have the same wiring width and the same wiring thickness.

A UHD (Ultra High Definition) display board for processing a video signal to be provided on a display panel side according to another aspect of the present invention includes a processor unit for processing a video signal to be provided to the display panel side, A backlight unit voltage amplifying circuit disposed at a predetermined interval on the left side of the processor unit to provide an amplified drive signal for driving a providing backlight bar; And a memory unit disposed at a predetermined distance apart on the right side of the processor unit to reduce an influence from the amplifying circuit, wherein, for impedance matching between the processor unit and the memory unit, revenge Of wires - one of the plurality of wires each of which the processor unit-side connection point, and also the memory-unit-side electrical connection between the connection point of the wire - is characterized in that the wires have the same wiring length.

According to one embodiment, the backlight unit voltage amplification circuit 110 includes an integration circuit part 1102 for receiving a PWM control signal from a PWM (Pulse Width Modulation) control signal generation part 1101 and generating a sawtooth signal, A smoothing circuit section 1105 for receiving the sawtooth signal from the integration circuit section and generating an amplified signal, a smoothing circuit section 1105 for receiving and smoothing the amplified signal from the amplification circuit, And an LED driver 1104 for generating the amplified drive signal and providing it to the backlight bar 1106 side.

According to one embodiment, the integration circuit 1102 includes a capacitor connected in parallel between the PWM control signal generator 1101 and the amplifier circuit 1103.

The present invention provides a layout structure of an improved UHD display board in a UHD display board, in which, in a UHD display board, an arrangement position of a memory unit is spaced apart from a backlight unit voltage amplifying circuit The control signal and data between the process unit and the memory unit are less influenced by the backlight unit voltage amplifying circuit.

1A and 1B are sample photographs of a UHD display board 100 according to an embodiment of the present invention. The UHD display board 100 includes a backlight unit voltage amplifying circuit (reference numeral 110), a processor unit 10, a memory Unit 20, and a wiring structure 30 therebetween. Particularly, FIG. 1A shows a case where there is one memory unit, and FIG. 1B shows a case where there are two memory units.
2A and 2B are enlarged photographs of a wiring structure part between the processor unit 10 and the memory unit 20 in a sample photograph of the UHD display board 100 of FIGS. 1A and 1B, respectively.
3A and 3B are diagrams showing only patterns on a printed circuit board to clearly show the wiring structure of each of FIGS. 2A and 2B.
4 is a block diagram of a backlight unit voltage amplification circuit for noise reduction in a UHD display board according to an embodiment of the present invention.
FIG. 5 is a block diagram of a conventional backlight unit voltage amplifying circuit for comparison with a backlight unit voltage amplifying circuit in the UHD display board of the present invention shown in FIG. 4,
6 shows waveforms of the backlight unit voltage amplifying circuit in the conventional UHD display board shown in Fig. 5, wherein (a) shows a waveform of the signal (N1) between the PWM control signal generating part 1 and the amplifying circuit part 2, (B) is a waveform of the signal at the input terminal N2 of the backlight bar 5, that is, the LED drive signal.
4 shows waveforms in the backlight unit voltage amplifying circuit according to the embodiment of the present invention shown in Fig. 4, wherein (a) shows the waveforms of the signals (N10) between the PWM control signal generating portion 1101 and the integrating circuit portion 1102 (C) is a waveform of the input signal at the input terminal N30 of the backlight bar 1106, that is, the waveform of the LED drive signal to be.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. It should be noted that the accompanying drawings and the description thereof are simplified and illustrated to facilitate understanding of the present invention by those skilled in the art.

1A and 1B are sample photographs of a UHD display board 100 and 100 'according to an embodiment of the present invention. In the UHD display boards 100 and 100', backlight unit voltage amplifying circuits 110 and 110 ' ', The processor units 10 and 10', the memory units 20 and 20 ', and the wiring structure 30 and 30' therebetween. 2A and 2B show a wiring structure portion between the processor units 10 and 10 'and the memory units 20 and 20' in the sample photographs of the UHD display boards 100 and 100 'of FIGS. 1A and 1B, respectively. 3A and 3B are views showing only patterns on a printed circuit board to clearly show the wiring structure of each of FIGS. 2A and 2B. FIG. 4 is a block diagram of a backlight unit voltage amplifying circuit for noise reduction in a UHD display board according to an embodiment of the present invention. 6 is a waveform diagram of a backlight unit voltage amplifying circuit in the conventional UHD display board shown in FIG. 5, wherein (a) shows a waveform of a PWM control signal (B) is a waveform of the signal at the input terminal N2 of the backlight bar 5, that is, the waveform of the LED drive signal. 7, waveforms in the backlight unit voltage amplifying circuit according to the embodiment of the present invention shown in Fig. 4 are shown, wherein (a) shows the waveforms of the PWM control signal generating unit 1101 and the integrating circuit unit 1102 (B) is a waveform of the output terminal N20 of the integration circuit part 1102, and (c) is a signal of the input terminal N30 of the backlight bar 1106, that is, It is the waveform of the signal.

Referring to FIGS. 1A to 3B, a UHD display board 100 or 100 'having a processor unit 10 or 10' and a memory unit 20 or 20 'according to an embodiment of the present invention The wiring structures 30 and 30 'between the processor units 10 and 10' and the memory units 20 and 20 'are used for impedance matching between the processor units 10 and 10' and the memory units 20 and 20 ' A plurality of wirings between the processor units 10 and 10 'and the memory units 20 and 20', each of the plurality of wirings being connected to the processor unit 10 and 10 ' Electrically connect the connection points on the sides of the units 20 and 20 '- have the same wiring length.

1A and 1B, the backlight unit voltage amplifying circuits 110 and 110 'are disposed in the left region in the UHD display boards 100 and 100'. And, the processor units 10 and 10 'are disposed in the central part (actually slightly shifted to the right in the illustrated sample). That is, the backlight unit voltage amplifying circuits 110 and 110 'are disposed on one side of the processor units 10 and 10', that is, on the left side. A processor unit memory unit 20, 20 'for processing a video signal is disposed on one side of the processor units 10, 10', that is, on the right side thereof. In addition, wiring patterns 30 and 30 'are formed on the printed circuit board for electrical connection between the processor units 10 and 10' and the memory units 20 and 20 '.

The wiring between the processor units 10 and 10 'and the memory units 20 and 20', which are indicated by red, orange, yellow, green, blue and purple, as shown in FIGS. 2A and 2B, Lt; / RTI > In FIG. 2, only portions exposed to the outside are indicated by the color lines. Actually, however, from the electrical contacts formed on the lower portions of the processor units 10 and 10 'to the corresponding electrical contacts formed on the lower portions of the memory units 10 and 10' Are wired so that the lengths of the respective wirings of the first and second wirings are the same, which can be understood with reference to Fig.

3A and 3B, the wiring structure according to the present invention is wired so that the electrical contacts of the processor units 10 and 10 'to the corresponding electrical contacts of the memory units 10 and 10' are all the same have. That is, the lengths of the wiring lines indicated in red in the drawings of FIGS. 3A and 3B are the same. Thus, impedance matching is facilitated. The plurality of wirings are formed so as to have the same wiring width and the same wiring thickness.

2A and 2B, the wiring structure according to an embodiment of the present invention includes a first group of wiring patterns (red, orange, yellow, A second group of wiring patterns (purple and upper wiring lines) having relatively few sections that are parallel to each other in comparison with the first group of wiring patterns, and a second group of wiring patterns And a third group of wiring patterns freely wired within a range that does not cause wiring interference with the two groups of wiring patterns (for example, wirings indicated by blue as wirings positioned substantially at the center in the wiring area).

For example, the wiring between the memory units 20 and 20 'and the processor units 10 and 10' is electrically connected to the address pins A0, A1, A2, ... on the memory units 20 and 20 ' The data lines electrically connected to the data input / output pins Din and Dout of the memory units 20 and 20 'and the control pins RAS, CAS, WE, and OE), and they may be grouped into a first group pattern, a second group pattern, and a third group pattern, and may be patterned to have different patterns. As shown in FIG. 2, a group (first group) having a relatively long section running in parallel with neighboring wirings, a group (second group) having a relatively short section in parallel with neighboring wirings, (Third group) with a very small number of sections parallel to each other. For example, the first group pattern may be wired to be connected to the address pins on the memory unit side, the second group pattern to the control pins on the memory unit side, and the third group pattern to be connected to the data input / output pins.

In other words, as shown in FIGS. 1A to 3B, in the UHD display board according to the present invention, the backlight unit voltage amplifying circuit 110 , 110 ') are disposed on the other side (the side opposite to the side adjacent to the side where the backlight unit voltage amplifying circuits 110, 110' are arranged is on the other side, since the processor unit is generally square) Respectively.

4, a backlight unit voltage amplifying circuit 110 (not shown) disposed in the UHD display board 100 for driving a backlight bar 1106 that provides a backlight to the display panel 1107, according to the present invention, ) Includes an integration circuit portion 1102 that receives a PWM control signal from a PWM (Pulse Width Modulation) control signal generation portion 1101 to generate a sawtooth signal, and a control portion 1102 that receives a sawtooth signal from the integration circuit portion 1102, A smoothing circuit 1105 for smoothing the amplified signal received from the amplifying circuit 103 and a smoothing signal from the smoothing circuit 1105 to generate an amplified drive signal And an LED driver 1104 for providing the light to the backlight bar 1106 side.

The backlight bar 1106 is provided to provide a backlight to the display unit 1107. A plurality of LEDs are typically arranged in a bar shape so that the structure of the backlight bar 1106 It is not closely related to the core of the invention and is therefore not described separately herein.

The PWM control signal generator 1101 is a component for generating a PWM control signal for controlling the LEDs of the backlight bar 1106. The PWM control signal generator 1101 generates a PWM control signal, An example of a PWM control signal for controlling the LEDs of the backlight bar 1106 through Pulse Width Modulation is shown in Fig. 7 (a). As shown, the PWM control signal has an alternating current characteristic as a square wave. Therefore, in order to control the LEDs provided to the backlight bar 1106 side, they must be converted to have a DC characteristic through the amplifier circuit portion 1103. In this process, a large number of pulses of AC component are generated, which may cause unnecessary oscillation or noise. To this end, in the present invention, the integration circuit unit 1102 is passed before amplification by the amplification circuit unit 1103.

The integration circuit unit 1102 generates a sawtooth signal as a square wave PWM control signal and sends it to the amplifier circuit unit 1103 side. One example of the sawtooth signal deformed by the action of the integration circuit portion 1102 is shown in Fig. 7 (b). The difference between the high level and the low level of the sawtooth signal passed through the integration circuit portion 1102 is relatively smaller than that of the square wave shown in (a) of FIG. By reducing the difference in the front end of the amplification circuit unit 1103, other components in the UHD display board, particularly, other components in the backlight unit voltage amplification circuit are affected after amplification so that unnecessary oscillation does not occur. The integration circuit unit 1102 may include a capacitor connected in parallel between the PWM control signal generation unit 1101 and the amplification circuit unit 1103, for example. The capacitor of the integrating circuit portion 1102 may have a capacitance of approximately 1 μF to 100 μF, and more preferably, a capacitance of 10 μF to 47 μF.

Next, the voltage waveforms according to the conventional backlight unit voltage amplifying circuit and the backlight unit voltage amplifying circuit according to the present invention will be described with reference to FIGS. 4 to 7. FIG.

First, referring to FIG. 5 and FIG. 6 together, a PWM control signal (waveform of N1 portion in FIG. 1) in a conventional backlight unit voltage amplifying circuit is a square wave as shown in FIG. 6A, (The waveform of the N2 portion in Fig. 5) finally input to the backlight bar 5 includes the pulsating current having a relatively large amplitude as shown in Fig. 6 (b), the LED driver 3 The flicker phenomenon is caused not only by the flicker phenomenon but also by the other parts in the UHD display board 100.

Therefore, in order to solve these problems, an integration circuit part 1102 is disposed at the front end of the amplification circuit part 1103, and the square wave from the PWM control signal generation part 1101 is firstly smoothed and then inputted to the amplification circuit part 1103 side .

Referring to FIG. 4 and FIG. 7 together, the PWM control signal (N10 portion waveform in FIG. 4) in the backlight unit voltage amplifying circuit according to the present invention is a square wave as shown in FIG. The PWM control signal is transformed into a sawtooth waveform by using the integration circuit unit 1102 and inputted to the amplifier circuit unit 1103 side. The output waveform of the integration circuit portion 1102 (the waveform at the N20 portion in FIG. 4) is a sawtooth waveform as shown in FIG. 7 (b), and it can be seen that the amplitude is greatly reduced when compared with FIG. The amplified light is then amplified by the amplifying circuit 1103 and then smoothed by the smoothing circuit 1105 and applied to the LED driver 1104 side so that the output of the LED driver 1104, The waveform of the N30 portion of FIG. 4) becomes a waveform close to DC as shown in FIG. 7 (c), whereby unnecessary oscillation, which is a disadvantage of the backlight unit voltage amplifying circuit of FIG. 5, Further, the flicker phenomenon on the display panel 1107 side can be further reduced.

Referring again to FIGS. 1A to 3B, a UHD display board 100, 100 'according to an embodiment of the present invention includes a backlight bar (not shown) for providing a back light to the display panel 1107 1106, and a video signal to be provided to the display panel 1107 together with the drive signal. The UHD display boards 100 and 100 'include processor units 10 and 10' for processing video signals to be provided to the display panel 1107 and a plurality of UHD display boards 100 and 100 'disposed on the left side of the processor units 10 and 10' A backlight unit voltage amplifying circuit 110, 110 'for providing an amplified drive signal for driving a backlight bar 1106 that provides a backlight to the processor unit 1107; And memory units 20 and 20 'for processing video signals of the processor units 10 and 10'. The memory unit 20 or 20 'is a component which is capable of reading and writing data required for processing and calculation of the processor units 10 and 10' in the processor units 10 and 10 ' 100, and 100 '(one or two memory units are illustrated in the illustrated example).

Wiring between the memory units 20 and 20 'and the processor units 10 and 10' is performed by the processor units 10 and 10 'and other elements (for example, various input / output interfaces in the UHD display boards 100 and 100' And the wiring in the backlight unit voltage amplifying circuits 110 and 110 'in the UHD display boards 100 and 100' must be taken into consideration in particular with respect to the wiring between the processor units 10 and 10 '.

Therefore, it is possible to reduce the influence between the backlight unit voltage amplifying circuits 110 and 110 'and the memory units 20 and 20', thereby reducing the noise due to the backlight unit voltage amplifying circuit, The memory units 20 and 20 'are arranged on the right side opposite to the backlight unit voltage amplifying circuits 110 and 110' with the processor units 10 and 10 'as the center in order to reduce image processing errors of the backlight unit voltage amplifying circuits 110 and 110' do.

The backlight unit voltage amplifying circuit 110 includes an integrating circuit portion 1102 for receiving a PWM control signal from the PWM control signal generating portion 1101 and generating a sawtooth signal as described above, A smoothing circuit portion 1105 for smoothing the amplified signal from the amplifying circuit portion 1103 and a smoothing circuit portion 1105 for smoothing the smoothing circuit portion 1105 from the smoothing circuit portion 1105, And an LED driver 1104 for generating an amplified drive signal and providing it to the backlight bar 1106 side.

As described above, the present invention provides a wiring structure for impedance matching between a processor unit and a memory and a UHD display board including the wiring structure, thereby reducing image processing errors of the processor unit. Furthermore, in the UHD display board, by arranging the arrangement position of the memory unit at a position distant from the backlight unit voltage amplifying circuit, the control signal and data between the process unit and the memory unit are stored in the backlight unit voltage There is an effect that the influence of the amplification circuit is lessened.

100, 100 ': UHD display board
10, 10 ': processor unit
20, 20 ': memory unit
30, 30 ': wiring structure
110, 110 ': backlight unit voltage amplifying circuit

Claims (5)

delete delete delete A UHD (Ultra High Definition) display board for processing a video signal to be provided on a display panel side,
A processor unit for processing a video signal to be provided to the display panel;
A backlight unit voltage amplifying circuit disposed at a predetermined interval on the left side of the processor unit to provide an amplified drive signal for driving a backlight bar for providing a backlight to the display panel; And
And a memory unit disposed at a predetermined distance on the right side of the processor unit to reduce an influence from the backlight unit voltage amplifying circuit for processing a video signal of the processor unit,
A plurality of wires between the processor unit and the memory unit for impedance matching between the processor unit and the memory unit, each of the plurality of wires being connected between the processor unit side connection point of the wiring and the connection point of the memory unit side Which are wired so as to have the same wiring length,
The backlight unit voltage amplifying circuit 110,
An integration circuit unit 1102 that receives a PWM control signal from a PWM (Pulse Width Modulation) control signal generation unit 1101 and generates a sawtooth wave signal; an amplifier circuit unit 1102 that receives the sawtooth wave signal from the integration circuit unit and generates an amplified signal; A smoothing circuit 1105 for smoothing the amplified signal received from the amplifying circuit unit 1103 and a smoothing circuit for smoothing the amplified signal received from the smoothing circuit unit 1103 to generate an amplified drive signal and providing the smoothed signal to the backlight bar 1106 LED driver (1104). ≪ RTI ID = 0.0 > 11. < / RTI > The integrated circuit according to claim 4, wherein the integration circuit (1102)
And a capacitor connected in parallel between the PWM control signal generator (1101) and the amplifier circuit (1103).
KR1020150106297A 2015-07-28 2015-07-28 Array structure of uhd display board for error and uhd display board therewith KR101593375B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150106297A KR101593375B1 (en) 2015-07-28 2015-07-28 Array structure of uhd display board for error and uhd display board therewith

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150106297A KR101593375B1 (en) 2015-07-28 2015-07-28 Array structure of uhd display board for error and uhd display board therewith

Publications (1)

Publication Number Publication Date
KR101593375B1 true KR101593375B1 (en) 2016-02-11

Family

ID=55351887

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150106297A KR101593375B1 (en) 2015-07-28 2015-07-28 Array structure of uhd display board for error and uhd display board therewith

Country Status (1)

Country Link
KR (1) KR101593375B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11251717A (en) * 1998-03-03 1999-09-17 Oki Electric Ind Co Ltd Method for arranging components on printed circuit board
JP2009104503A (en) * 2007-10-25 2009-05-14 Funai Electric Co Ltd Electric circuit and design method of electric circuit
KR20090101789A (en) * 2008-03-24 2009-09-29 주식회사 엔 이 에스 System and method for wibro service
KR101218371B1 (en) 2012-01-03 2013-01-02 주식회사 하이스코 Video processing apparatus having on board back light unit power converter supporting display port interface

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11251717A (en) * 1998-03-03 1999-09-17 Oki Electric Ind Co Ltd Method for arranging components on printed circuit board
JP2009104503A (en) * 2007-10-25 2009-05-14 Funai Electric Co Ltd Electric circuit and design method of electric circuit
KR20090101789A (en) * 2008-03-24 2009-09-29 주식회사 엔 이 에스 System and method for wibro service
KR101218371B1 (en) 2012-01-03 2013-01-02 주식회사 하이스코 Video processing apparatus having on board back light unit power converter supporting display port interface

Similar Documents

Publication Publication Date Title
CN113963622B (en) Display panel and display device
JP3263705B2 (en) Printed wiring board and flat panel display driving circuit printed wiring board and flat panel display device
US20180108310A1 (en) Array substrate, display panel, display device and display method
CN104900200B (en) Show the driving device of equipment
US10013126B2 (en) Electronic apparatus and single-layer multi-point mutual capacitive touch screen thereof
US11227530B2 (en) Display panel
KR101593375B1 (en) Array structure of uhd display board for error and uhd display board therewith
US20190362665A1 (en) Display apparatus and data driving integrated circuit thereof
KR101571272B1 (en) Pattern for impedance matching between processor unit and memory unit and uhd display board including the same
KR101589949B1 (en) Pattern for impedance matching between processor unit and memory unit and uhd display board including the same
JP6806933B2 (en) Test circuit for in-cell touch panel
TWI670704B (en) Display screen, pixel driving method and display device
US10470308B1 (en) Printed circuit board assembly and electronic device using the same
US9479719B2 (en) Image sensing device having input/output lines
TWI636446B (en) Display panel
US20180096929A1 (en) Semiconductor device and display device
JP7067920B2 (en) Tablet
US9977560B2 (en) Touch control structure and liquid crystal display having the touch control structure
US7222279B2 (en) Semiconductor integrated circuit and test system for testing the same
US9541950B2 (en) Multi-screen display apparatus and method for eliminating signal interferences in multi-screens
US11605329B2 (en) Display apparatus
US11004415B2 (en) Shift register circuit and display panel using the same
CN106163110B (en) A kind of pcb board
US10912189B2 (en) Circuit board
US11004416B2 (en) Shift register circuit and display panel using the same

Legal Events

Date Code Title Description
A201 Request for examination
A302 Request for accelerated examination
N231 Notification of change of applicant
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee