Digitizer and display apparatus including the same
US-2022011889-A1 · Jan 13, 2022 · US
Display apparatus and method of controlling the same
US12585359B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12585359-B2 |
| Application number | US-202418951422-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 18, 2024 |
| Priority date | Jan 12, 2024 |
| Publication date | Mar 24, 2026 |
| Grant date | Mar 24, 2026 |
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Abstract
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A display apparatus includes: a display panel including a display region including pixels located in n rows, where n is a natural number; and a digitizer overlapping with the display panel, the digitizer to transmit a charging signal to an input unit and receive a position signal from the input unit. When the digitizer transmits the charging signal to the input unit, a frequency of the charging signal is synchronized to T, where T is a time taken from when a scan signal is applied to a first row of the display region from among the n rows to when a scan signal is applied to the first row a next time.
First claim
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What is claimed is: 1 . A display apparatus comprising: a display panel comprising a display region comprising pixels located in n rows, where n is a natural number; and a digitizer overlapping with the display panel, the digitizer configured to transmit a charging signal to an input unit and receive a position signal from the input unit, wherein, when the digitizer transmits the charging signal to the input unit, a frequency of the charging signal is synchronized to T, where T is a time taken from when a scan signal is applied to a first row of the display region from among the n rows to when a scan signal is applied to the first row a next time. 2 . The display apparatus of claim 1 , wherein phases of the charging signal at a moment when a corresponding scan signal is applied to each of the n rows are the same. 3 . The display apparatus of claim 1 , wherein the frequency of the charging signal is (n×k)/T, where k is a natural number. 4 . The display apparatus of claim 1 , wherein the charging signal is a signal to generate an induced current in a charging coil of the input unit. 5 . The display apparatus of claim 1 , wherein the charging signal has a sine wave waveform. 6 . The display apparatus of claim 5 , wherein phases of the charging signal at a moment when a scan signal application ends in each of the n rows are the same. 7 . The display apparatus of claim 5 , wherein, in each of the n rows, a phase of the charging signal at a moment when a scan signal application ends is 90 degrees. 8 . The display apparatus of claim 5 , wherein, in each of the n rows, a phase of the charging signal at a moment when a scan signal application ends is 270 degrees. 9 . The display apparatus of claim 1 , wherein the digitizer comprises a plurality of first patterns extending to be parallel to the n rows, and wherein the plurality of first patterns is configured to generate the charging signal. 10 . The display apparatus of claim 9 , wherein the digitizer further comprises a plurality of second patterns extending to cross the n rows. 11 . A method of controlling a display apparatus comprising a display panel comprising pixels located in n rows, where n is a natural number, the method comprising: transmitting, by a digitizer overlapping with the display panel, a charging signal to an input unit; and when the digitizer transmits the charging signal, synchronizing a frequency of the charging signal to T, where T is a time taken from when a scan signal is applied to a first row of a display region from among the n rows to when a scan signal is applied to the first row a next time. 12 . The method of claim 11 , wherein phases of the charging signal at a moment when a corresponding scan signal is applied to each of the n rows are the same. 13 . The method of claim 11 , wherein the frequency of the charging signal is (n×k)/T, where k is a natural number. 14 . The method of claim 11 , wherein the charging signal is a signal to generate an induced current in a charging coil of the input unit. 15 . The method of claim 11 , wherein the charging signal has a sine wave waveform. 16 . The method of claim 15 , wherein phases of the charging signal at a moment when a scan signal application ends in each of the n rows are the same. 17 . The method of claim 15 , wherein, in each of the n rows, a phase of the charging signal at a moment when a scan signal application ends is 90 degrees. 18 . The method of claim 15 , wherein, in each of the n rows, a phase of the charging signal at a moment when a scan signal application ends is 270 degrees.
Assignees
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Classifications
Aspects of interface with display user · CPC title
Precharge or discharge of pixel before applying new pixel voltage · CPC title
Details of timing specific for flat panels, other than clock recovery · CPC title
Details of flat display driving waveforms · CPC title
with pixel circuitry controlling the current through the light-emitting element · CPC title
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Frequently asked questions
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- What does patent US12585359B2 cover?
- A display apparatus includes: a display panel including a display region including pixels located in n rows, where n is a natural number; and a digitizer overlapping with the display panel, the digitizer to transmit a charging signal to an input unit and receive a position signal from the input unit. When the digitizer transmits the charging signal to the input unit, a frequency of the charging…
- Who is the assignee on this patent?
- Samsung Display Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G06F3/04164. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 24 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).