Display control and touch detection device, semiconductor integrated circuit
First Claim
1. A display control and touch detection device comprising:
- a display controller configured to;
form, in each of a plurality of display frame periods, a plurality of display terms and a plurality of non-display terms, wherein a first one of the plurality of non-display terms is arranged between two of the plurality of display terms;
perform display of display data on a display panel in each of the plurality of display terms; and
use control data of a first frame mode and control data of a second frame mode to gradually increase a first display term of the plurality of display terms by a first length of time and gradually shorten a last display term of the plurality of display terms by the first length of time in each display frame period, wherein start timings of the pluralities of display and non-display terms when operating in the second frame mode are different from when operating in the first frame mode;
a touch controller configured to perform touch detection on a touch panel in the plurality of non-display terms on an as-needed basis; and
a microprocessor configured to change a way for the display controller to use the control data of the first frame mode and the control data of the second frame mode based on a result of the touch detection by the touch controller.
5 Assignments
0 Petitions
Accused Products
Abstract
A display control and touch detection device is capable of controlling display and non-display terms in start timing depending on a result of touch detection, and includes a nonvolatile memory and a control logic which selectively uses data stored in the memory according to a display mode. The control logic changes the display and non-display terms in start timing in display frame periods, whereby the phenomenon of appearance of an undesired brightness difference at a fixed location in a display frame with no display, and the phenomenon of occurrence of flicker owing to the undesired brightness difference can be suppressed. Based on the result of touch detection, the control logic changes the way to use data which decide start timings of display and no display. The start timings of display and non-display terms in a display frame period can be changed depending on the result of touch detection readily.
-
Citations
19 Claims
-
1. A display control and touch detection device comprising:
-
a display controller configured to; form, in each of a plurality of display frame periods, a plurality of display terms and a plurality of non-display terms, wherein a first one of the plurality of non-display terms is arranged between two of the plurality of display terms; perform display of display data on a display panel in each of the plurality of display terms; and use control data of a first frame mode and control data of a second frame mode to gradually increase a first display term of the plurality of display terms by a first length of time and gradually shorten a last display term of the plurality of display terms by the first length of time in each display frame period, wherein start timings of the pluralities of display and non-display terms when operating in the second frame mode are different from when operating in the first frame mode; a touch controller configured to perform touch detection on a touch panel in the plurality of non-display terms on an as-needed basis; and a microprocessor configured to change a way for the display controller to use the control data of the first frame mode and the control data of the second frame mode based on a result of the touch detection by the touch controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A semiconductor integrated circuit comprising:
-
a display controller configured to; form, in each of a plurality of display frame periods, a plurality of display terms and a plurality of non-display terms, wherein a first one of the plurality of non-display terms is arranged between two of the plurality of display terms; perform display of display data on a display panel in each of the plurality of display terms; use control data of a first frame mode and control data of a second frame mode to control the pluralities of display and non-display terms, wherein start timings of the pluralities of the display and non-display terms when operating in the second frame mode are different from when operating in the first frame mode, and wherein the control data of the first frame mode comprises a plurality of sets of first control data which define the start timings of the pluralities of display and non-display terms according to the first frame mode, and the control data of the second frame mode comprises a plurality of sets of second control data which define the start timings of the pluralities of display and non-display terms according to the second frame mode; a touch controller configured to perform touch detection on a touch panel in the plurality of non-display terms on an as-needed basis; and a microprocessor connected with the display controller and the touch controller, the microprocessor configured to perform control for changing a way for the display controller to use the control data of the first frame mode and the control data of the second frame mode based on a result of performing the touch detection by the touch controller. - View Dependent Claims (14, 15, 16, 17, 18)
the microprocessor is configured to use the second display mode in case that a given time has elapsed with a touch remaining undetected since using the first display mode.
-
-
18. The semiconductor integrated circuit according to claim 17, wherein the first display mode is an action mode arranged to continue the first frame mode provided that the plurality of display frame periods make one unit in the first frame mode,
wherein the second display mode is an action mode arranged to repeat: - executing the second frame mode in part of the plurality of display frame periods thereof provided that the plurality of display frame periods make one unit in the second frame mode and executing, in a last display frame period, the first frame mode,
the display controller is further configured to execute a display action and not allow a touch detection action during each of the plurality of display terms in respective display frame periods of the first frame mode, and allow the touch detection action and keep the display action stopped during each of the plurality of non-display terms therein, and the display controller is further configured to execute the display action and not allow the touch detection action during each of the plurality of display terms in respective display frame periods of the second frame mode, and keep the display action stopped and not allow the touch detection during each of the plurality of non-display terms therein.
- executing the second frame mode in part of the plurality of display frame periods thereof provided that the plurality of display frame periods make one unit in the second frame mode and executing, in a last display frame period, the first frame mode,
-
19. A display control and touch detection device configured to form, in each of a plurality of display frame periods, a plurality of display terms and a plurality of non-display terms, wherein a first one of the plurality of non-display terms is arranged between two of the plurality of display terms, perform display control on a display panel in the plurality of display terms, perform touch detection control on a touch panel in the plurality of non-display terms on an as-needed basis, and perform control for changing start timings of the pluralities of display and non-display terms in units of a display frame period at intervals of the plurality of display frame periods, the display control and touch detection device comprising:
-
a first control part configured to use control data of a first frame mode and control data of a second frame mode to control the pluralities of display and non-display terms, wherein the start timings of the pluralities of display and non-display terms when operating in the second frame mode are different from when operating in the first frame mode; and a second control part configured to change a way for the first control part to use the control data of the first frame mode and the control data of the second frame mode based on a result of touch detection according to the touch detection control by, subsequent to a reset process; executing the second frame mode in part of the plurality of display frame periods thereof provided that the plurality of display frame periods make one unit in the second frame mode; and executing, in a last display frame period of the plurality of display frame periods, the first frame mode.
-
Specification