EP2867753A1 - Display unit with a touch control unit - Google Patents
Display unit with a touch control unitInfo
- Publication number
- EP2867753A1 EP2867753A1 EP13732888.6A EP13732888A EP2867753A1 EP 2867753 A1 EP2867753 A1 EP 2867753A1 EP 13732888 A EP13732888 A EP 13732888A EP 2867753 A1 EP2867753 A1 EP 2867753A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- unit
- high voltage
- display unit
- display
- coupled
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
Definitions
- the invention relates to a display unit with a touch control unit according to the features of the preamble of claim 1.
- Display units formed as liquid crystal displays, so-called LC displays (Liquid Crystal Display LCD), are well known.
- Tactile displays based on transistor-controlled liquid crystal displays are also known and produce a sharp image. Such displays usually have to detect
- Tastcontroller on, in addition to a microprocessor comprises a high voltage generator for row control and an analog / digital converter for column detection or vice versa.
- High-voltage generator is part of an I / O controller, a so-called GPIO (General Purpose I / O Controller) of the Tastcontroller, which charges capacitors of the touch panel with a voltage of 18 V to 25 V at a current of less than 5 mA.
- GPIO General Purpose I / O Controller
- the control of the display and the touch detection can be realized.
- the electrode is coupled to a display control circuit and to a touch detection circuit.
- US 2010/0039419 A1 discloses a display unit with a pixel electrode and a transistor for controlling the pixels.
- the object of the present invention is to specify a display unit with an improved touch control unit.
- the object is achieved by a display unit with a Tastkontrollmaschine with the features of claim 1.
- a display unit is designed in particular as a capacitive display unit and has a Tastkontrolliki on the input side, a multiplexer and an analog-to-digital converter, which with a
- the Central unit of the Tastkontrolliser is coupled comprises.
- the multiplexer has a number of electrical inputs and serves the
- the multiplexer can be used as an alternative to
- the Tastkontrollech a serial input and output interface, which with an external
- High voltage unit for column control of the display unit is coupled.
- the invention is based on the consideration that the capacitors of the display unit for touch detection of one and the same
- High voltage unit can be charged, are controlled by the transistors of the display unit.
- the high-voltage unit is designed as an external unit and thus separately from the Tastcontroller.
- the tactile control unit is preferably a conventional one
- Microprocessor in particular as a low-voltage microprocessor, designed for low voltage with a low voltage range of less than 5V.
- manufacturing costs are significantly reduced for a.
- the high voltage unit in an advantageous embodiment is operable in a high voltage range of greater than 18 V, for example in a range of 18 V to 25 V, the capacitors may be charged with high voltage in the range of 18 V or higher at a current of 5 mA is. This results in a better signal-to-noise ratio for the touch detection of the display unit.
- High voltage unit at least one high-voltage shift register for column control of the display unit, which is coupled to the Tastkontrollü and with a high voltage generator.
- the high voltage shift register is clocked and controlled by the touch control unit and supplied by the high voltage generator.
- the external high voltage unit has a
- a serial / parallel converter for column control of the display unit which is coupled to the Tastkontrollmaschine and the high voltage generator.
- the high-voltage shift register or the serial / parallel converter has two inputs on the input side, one of the Terminals for receiving a clock signal and the other for receiving a data signal is formed, which emits on the output side in a number of electrical outputs, which are preferably parallel. The number of outputs depends on the size of the display unit.
- the display unit is as a
- Liquid crystal display in particular as a liquid crystal display based on transistor control, formed, which allows the generation of a perceived as high quality image.
- the single figure shows a schematic representation of a
- touch-sensitive display unit 1 hereinafter referred to as display 1.
- the display 1 is a liquid crystal display, in particular a
- the display is designed as a TFT display with an operating device, preferably a so-called touch panel.
- the display 1 is designed with a microprocessor
- Tastcontroller 2 coupled.
- the Tastcontroller 2 is designed as a conventional low-voltage integrated microprocessor in a low voltage range of less than 5 V.
- On the input side comprises the Tastcontroller 2 for line detection of
- Display 1 in particular the operating device, inputs E1 to Em, which open into a multiplexer 3, the an analog-to-digital converter. 4 is followed, the digital output signals of a central unit 5 are supplied.
- the sense controller 2 On the output side, the sense controller 2 has a serial input / output interface 6, which is coupled to an external high voltage unit 7 for line control of the display 1.
- the external high-voltage unit 7 has a high-voltage shift register 8, in which a clock signal T and serial data D of the Tastcontrollers 2 for column control of a
- Touch detection sensor open.
- a plurality of parallel outputs A1 to An are coupled to the display 1 for column control of the operating device.
- the number of outputs A1 to An is variable and depends in particular on the size of the display 1.
- the external high voltage unit 7 has a
- Triggering of the transistors of the display 1 is coupled in the high voltage range.
- High voltage unit 7 operates in a high voltage range VGH greater than +18 V, in particular +22 V or for example in a range of +18 V to +25 V or +20 V to +25 V.
- a serial / parallel converter may be provided instead of a shift register 8.
- the high voltage generator 9 may be part of the shift register 8 or the serial / parallel converter, so that they are formed as an integrated unit and the external
- High voltage unit 7 form a structural unit. LIST OF REFERENCE NUMBERS
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012012756 | 2012-06-27 | ||
PCT/EP2013/063281 WO2014001335A1 (en) | 2012-06-27 | 2013-06-25 | Display unit with a touch control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2867753A1 true EP2867753A1 (en) | 2015-05-06 |
Family
ID=48741092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13732888.6A Ceased EP2867753A1 (en) | 2012-06-27 | 2013-06-25 | Display unit with a touch control unit |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2867753A1 (en) |
WO (1) | WO2014001335A1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104965621B (en) * | 2006-06-09 | 2018-06-12 | 苹果公司 | Touch screen LCD and its operating method |
JP4595008B2 (en) | 2008-08-12 | 2010-12-08 | ティーピーオー ディスプレイズ コーポレイション | Display device, electronic device, electronic system |
BRPI1004217A2 (en) * | 2009-06-29 | 2016-02-23 | Sony Corp | capacitive touch panel and display device |
EP2463757A1 (en) | 2009-09-27 | 2012-06-13 | Inferpoint Systems Limited | Touch control display able to remove display impact on touch control |
-
2013
- 2013-06-25 WO PCT/EP2013/063281 patent/WO2014001335A1/en active Application Filing
- 2013-06-25 EP EP13732888.6A patent/EP2867753A1/en not_active Ceased
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2014001335A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2014001335A1 (en) | 2014-01-03 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20150127 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: FABER, JAN Inventor name: RAWER, MARC |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20171213 |
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REG | Reference to a national code |
Ref country code: DE Ref legal event code: R003 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
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18R | Application refused |
Effective date: 20190704 |