TWI497375B - Touch display apparatus - Google Patents

Touch display apparatus Download PDF

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Publication number
TWI497375B
TWI497375B TW102141305A TW102141305A TWI497375B TW I497375 B TWI497375 B TW I497375B TW 102141305 A TW102141305 A TW 102141305A TW 102141305 A TW102141305 A TW 102141305A TW I497375 B TWI497375 B TW I497375B
Authority
TW
Taiwan
Prior art keywords
touch
display
substrate
signal
lines
Prior art date
Application number
TW102141305A
Other languages
Chinese (zh)
Other versions
TW201504889A (en
Inventor
Yaw Guang Chang
Chao Wen Wu
Original Assignee
Himax Tech Ltd
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
Priority to US201361859294P priority Critical
Application filed by Himax Tech Ltd filed Critical Himax Tech Ltd
Priority claimed from US14/189,763 external-priority patent/US20150029413A1/en
Publication of TW201504889A publication Critical patent/TW201504889A/en
Application granted granted Critical
Publication of TWI497375B publication Critical patent/TWI497375B/en

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412Digitisers structurally integrated in a display

Description

Touch display device

The present invention relates to an electronic device, and more particularly to a touch display device.

In the case of a general flat display device, the image is composed of a two-dimensional pixel array. In the driving mechanism, it can be divided into horizontal scanning lines and vertical data lines to drive the color and gray scale of each pixel. The conventional touch panel is, for example, resistive or capacitive, and is measured in two directions to determine whether a touch point occurs and determine the position of the touch point. With advances in manufacturing technology, touch panels have now been successfully integrated into display panels for more efficient and convenient control.

Although the touch panel has been successfully integrated into the display panel, there is still room for improvement in the integration technology of the touch panel and the display panel. In the prior art, the data line signal and the scan line signal for driving the touch display device to display the screen and the touch scan signal and the touch sensing signal for driving the touch display device for touch sensing are respectively Signal transmission through different transmission lines (ie, data lines, scan lines, touch scan lines, touch sensing lines, etc.). In addition, since the touch sensing lines and other signal transmission lines (such as data lines, scanning lines, and touch scanning lines) are configured differently In the layer, two different flexible printed circuit boards are respectively disposed between the touch panel and the touch display panel to respectively transmit and receive touch scan signals and touch feelings on the touch scan lines in the touch display panel. The touch sensing signal on the line, and the assembly of the flexible printed circuit board may reduce the yield of the product.

The invention provides a touch display device, which can reduce the manufacturing cost of the touch display device and simultaneously improve the product yield.

The touch display device of the present invention includes a first substrate, a plurality of data lines, a plurality of scan lines, a plurality of touch sensing lines, and a second substrate. The data line, the scan line and the touch sensing line are disposed on the first substrate. During the display driving, the data line transmits the data signal to the corresponding pixel unit, and the scan line transmits the scan line signal to the corresponding picture. During the touch period, at least some of the data lines transmit the touch scan signals to the corresponding plurality of touch units, and the touch sensing lines receive the touch sensing signals from the corresponding touch units. The second substrate is disposed above the first substrate.

In an embodiment of the present invention, the touch display device further includes a display driving chip disposed on the first substrate and coupled to the pixel unit through the data line and the scan line for outputting the display data signal and the scan line. Signal and touch scan signal.

In an embodiment of the invention, the touch display device further includes a touch control chip, and the touch sensing signal is coupled to the touch sensing signal through the flexible printed circuit board.

In an embodiment of the invention, the touch display device further includes a motherboard control unit coupled to the display driving chip and the touch wafer through the flexible printed circuit board, and controlling the display driving chip to output the display data signal, Scanning the line signal and the touch scanning signal, and controlling the touch wafer to receive the touch sensing signal.

In an embodiment of the invention, the touch display device further includes a touch control chip disposed on the first substrate, coupled to the touch sensing line, and receiving the touch sensing signal from the touch sensing line.

In an embodiment of the invention, the touch wafer is disposed outside the display driving chip or integrated into the display driving chip.

In an embodiment of the invention, the touch wafer transmits a common voltage signal to the pixel unit through the touch sensing line during display driving.

In an embodiment of the invention, the first substrate is a thin film transistor substrate, and the second substrate is a color filter substrate.

In an embodiment of the invention, the touch display device further includes a protective lens disposed above the color filter substrate.

Based on the above, the embodiment of the present invention uses the data line to transmit the display data signal or the touch scan signal during different periods, and configures the data line, the scan line and the touch sensing line RL1 on the same substrate to reduce the use. The flexible printed circuit board further reduces the manufacturing cost of the touch display device while improving the yield of the product.

The above described features and advantages of the invention will be apparent from the following description.

102‧‧‧First substrate

104‧‧‧second substrate

106‧‧‧Display driver chip

108‧‧‧Touch chip

110‧‧‧ motherboard control unit

112‧‧‧Flexible printed circuit boards

114‧‧‧Active layer

116‧‧‧Protection lenses

302‧‧‧Control chip

DL1‧‧‧ data line

SL1‧‧‧ scan line

RL1‧‧‧ touch sensing line

FIG. 1A is a schematic diagram of a touch display device according to an embodiment of the invention.

FIG. 1B is a schematic side view of the touch display device of the embodiment of FIG. 1A.

2A is a schematic diagram of a touch display device according to another embodiment of the present invention.

2B is a schematic side view of the touch display device of the embodiment of FIG. 2A.

FIG. 3A is a schematic diagram of a touch display device according to another embodiment of the present invention.

FIG. 3B is a schematic side view of the touch display device of the embodiment of FIG. 3A.

1A is a schematic diagram of a touch display device according to an embodiment of the present invention. FIG. 1B is a side view of the touch display device of the embodiment of FIG. 1A. Please refer to FIG. 1A and FIG. 1B simultaneously. The touch display device includes a first substrate 102 , a second substrate 104 , a plurality of data lines DL1 , a plurality of scan lines SL1 , a plurality of touch sensing lines RL1 , a display driving chip 106 , a touch wafer 108 , and a motherboard control unit 110 . . The first substrate 102 can be, for example, a thin film transistor substrate, and the second substrate 104 can be, for example, a color filter substrate. As shown in FIG. 1B , the second substrate 104 is disposed above the first substrate 102 . Further, the touch display device may further include a protective lens 116 (not shown in FIG. 1A for keeping the drawing simple), which is disposed above the second substrate 104 (ie, the color filter substrate) for protection. The components on the first substrate 102 and the second substrate 104.

In addition, the data line DL1, the scan line SL1, the touch sensing line RL1, and The display driving wafer 106 is disposed on the first substrate 102. In FIG. 1B, the active layer 114 sandwiched between the first substrate 102 and the second substrate 104 may include active elements such as a thin film transistor such as indium tin oxide as a gate electrode, and may also include a pixel for displaying a picture. A unit (not shown) and a touch unit (not shown) for performing touch detection. The display driver chip 106 is coupled to the plurality of pixel units on the first substrate 102 through the data line DL1 and the scan line SL1, and the touch chip 108 is coupled to the touch sensing line RL1 through the flexible printed circuit board 112. Coupling to multiple touch units. In addition, the motherboard control unit 110 is also coupled to the display driving chip 106 and the touch wafer 108 through the flexible printed circuit board 112.

The touch display device can include a display driving period and a touch period in each frame, wherein during the display driving, the motherboard control unit 110 can control the display driving chip 106 to transmit the display data through the data line DL1 and the scan line SL1, respectively. The signal and the scan line signal share the common voltage signal to the corresponding pixel unit, and the touch chip 108 transmits the common voltage signal to the pixel unit through the flexible printed circuit board 112 and the touch sensing line RL1 to enable the touch display device. Perform a screen display. During the touch control, the control panel 110 controls the touch control chip 108 to transmit the touch scan signal to the corresponding touch unit through the data line DL1, and corresponds to the touch sensing line RL1 through the touch sensing line RL1. The touch units receive the touch sensing signals to determine the touch position according to the touch sensing signals. It is worth noting that when the touch detection is performed, the distribution density of the touch unit does not need to be as high as the pixel unit to achieve a good touch detection effect. Therefore, when the touch wafer 108 transmits the touch scan signal, The touch scan signal can be transmitted only to part of the data line DL1.

As described above, the data line DL1 can transmit the display data signal and the touch scan signal during the display driving period and the touch period, and in the embodiment, the data line DL1, the scan line SL1, and the touch sensing line RL1 are all located in the same manner. In one layer (all on the first substrate 102), the touch display device of the present embodiment only needs one flexible printed circuit board 112 to transmit the touch scanning signal and the touch sensing signal, without As in the prior art, two flexible printed circuit boards are required to respectively connect the touch sensing lines and the touch scanning lines on the touch display panel. Therefore, the configuration of the signal transmission lines in this embodiment can effectively improve the product. Rate and reduce manufacturing costs.

FIG. 2A is a schematic diagram of a touch display device according to another embodiment of the present invention, and FIG. 2B is a schematic side view of the touch display device of the embodiment of FIG. 2A. Please refer to FIG. 2A and FIG. 2B simultaneously. The embodiment of FIG. 2A and FIG. 2B is different from the embodiment of FIG. 1A and FIG. 1B in that, in the embodiment of FIG. 2A and FIG. 2B, the touch wafer 108 is disposed on the first substrate 102. Thus, the touch wafer 108 can be coupled to the touch sensing line RL1 through the flexible printed circuit board 112, thereby reducing damage that may occur when the flexible printed circuit board 112 is bonded, and further improving product yield.

FIG. 3A is a schematic diagram of a touch display device according to another embodiment of the present invention, and FIG. 3B is a side view of the touch display device of the embodiment of FIG. 3A. Please refer to FIG. 3A and FIG. 3B simultaneously. The difference between the embodiment of FIG. 3A and FIG. 3B is different from the embodiment of FIG. 2A and FIG. 2B in that, in the embodiment of FIG. 3A and FIG. 3B, the touch wafer 108 can be disposed on the display as shown in the embodiment of FIG. 2A and FIG. 2B. The driving chip 106 is externally integrated and can be directly integrated into the display driving wafer 106. In the present embodiment, the components integrating the touch wafer 108 and the display driving wafer 106 are represented as the control wafer 302.

In summary, the present invention uses a data line to transmit a display data signal or a touch scan signal during different periods, and configures the data line DL1, the scan line SL1, and the touch sensing line RL1 on the same substrate to reduce The use of a flexible printed circuit board further reduces the manufacturing cost of the touch display device while improving product yield.

102‧‧‧First substrate

104‧‧‧second substrate

106‧‧‧Display driver chip

108‧‧‧Touch chip

110‧‧‧ motherboard control unit

112‧‧‧Flexible printed circuit boards

DL1‧‧‧ data line

SL1‧‧‧ scan line

RL1‧‧‧ touch sensing line

Claims (10)

  1. A touch display device includes: a first substrate; a plurality of data lines; a plurality of scan lines; and a plurality of touch sensing lines, wherein the data lines, the scan lines, and the touch sensing lines are disposed in the first On a substrate, wherein during a display driving, the data lines transmit a display data signal to a plurality of pixel units corresponding thereto, and the scan lines transmit the scan line signals to the corresponding pixel units corresponding thereto, at the touch During the control, at least some of the data lines transmit the touch scan signals to the corresponding plurality of touch units, and the touch sensing lines receive the touch sensing signals from the corresponding touch units; The second substrate is disposed above the first substrate.
  2. The touch display device of claim 1, further comprising: a display driving chip disposed on the first substrate, and the pixel units are coupled to the pixel units through the data lines The display data signal, the scan line signal and the touch scan signal are outputted.
  3. The touch display device of claim 2, further comprising: a touch chip coupled to the touch sensing lines via a flexible printed circuit board, the touch sensing lines being received from the touch sensing lines Control the signal.
  4. The touch display device of claim 3, further comprising: a motherboard control unit coupled to the display through the flexible printed circuit board Driving the display chip and the touch control chip, controlling the display drive chip to output the display data signal, the scan line signal and the touch scan signal, and controlling the touch wafer to receive the touch sensing signal.
  5. The touch display device of claim 2, further comprising: a touch chip disposed on the first substrate, coupled to the touch sensing lines, and receiving the touch from the touch sensing lines Control the signal.
  6. The touch display device of claim 5, wherein the touch wafer is disposed outside the display drive wafer or integrated into the display drive wafer.
  7. The touch display device of claim 5, further comprising: a motherboard control unit coupled to the display drive chip and the touch wafer via a flexible printed circuit board to control the display drive chip The display data signal and the touch scan signal are outputted, and the touch wafer is controlled to receive the touch sensing signal.
  8. The touch display device of claim 1, wherein the touch control chip transmits a common voltage signal to the pixel units through the touch sensing lines during the display driving.
  9. The touch display device of claim 1, wherein the first substrate is a thin film transistor substrate, and the second substrate is a color filter substrate.
  10. The touch display device of claim 9, further comprising: a protective lens disposed above the color filter substrate.
TW102141305A 2013-07-28 2013-11-13 Touch display apparatus TWI497375B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US201361859294P true 2013-07-28 2013-07-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14/189,763 US20150029413A1 (en) 2013-07-28 2014-02-25 Touch display apparatus

Publications (2)

Publication Number Publication Date
TW201504889A TW201504889A (en) 2015-02-01
TWI497375B true TWI497375B (en) 2015-08-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
TW102141305A TWI497375B (en) 2013-07-28 2013-11-13 Touch display apparatus

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CN (1) CN104345965A (en)
TW (1) TWI497375B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201023002A (en) * 2008-12-04 2010-06-16 Wintek Corp Touch display panel
TW201201074A (en) * 2010-06-29 2012-01-01 Novatek Microelectronics Corp Driving method, driving device and touch sensible display device using the same
CN102749747A (en) * 2012-05-11 2012-10-24 友达光电股份有限公司 Touch display panel and manufacture method thereof
TW201322071A (en) * 2011-11-23 2013-06-01 Hsiung-Kuang Tsai Display apparatus and touch sensing method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102768604A (en) * 2012-06-29 2012-11-07 京东方科技集团股份有限公司 Capacitive embedded touch screen, as well as touch location method and display device thereof
CN103034386B (en) * 2012-12-20 2015-11-11 北京京东方光电科技有限公司 Capacitance type touch control display panel, display device, control device and method
CN103150073B (en) * 2013-03-12 2015-10-14 合肥京东方光电科技有限公司 A kind of capacitance type in-cell touch panel and display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201023002A (en) * 2008-12-04 2010-06-16 Wintek Corp Touch display panel
TW201201074A (en) * 2010-06-29 2012-01-01 Novatek Microelectronics Corp Driving method, driving device and touch sensible display device using the same
TW201322071A (en) * 2011-11-23 2013-06-01 Hsiung-Kuang Tsai Display apparatus and touch sensing method thereof
CN102749747A (en) * 2012-05-11 2012-10-24 友达光电股份有限公司 Touch display panel and manufacture method thereof

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Publication number Publication date
CN104345965A (en) 2015-02-11
TW201504889A (en) 2015-02-01

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