Method for adjusting sensitivity of touch panels
The present application relates to a method for adjusting the sensitivity of a touch panel. A look up table is built. The look up table includes a charging station look up table and a discharging station look up table. The charging station look up table includes a threshold value (V 0m ) of a touch signal, an electrical quantity (A 0i ) corresponding to the threshold value (V 0m ), and a computational method g 1 . The discharging station look up table includes the threshold value (V 0m ), the electrical quantity (A 0i ), and a computational method g 2 . The current electrical quantity and whether the capacitive touch panel is charging are detected. According to the current electrical quantity, the state of charging or discharging, and the computational method g 1 or g 2 , the threshold value (V 0m ) is adjusted.
1. A method for adjusting a sensitivity of a capacitive touch panel, the method comprising:
building a look up table comprising a charging station look up table and a discharging station look up table, wherein the charging station look up table comprises a threshold value (V 0m ) of a touch signal, an electrical quantity (A 0i ,) corresponding to the threshold value (V 0m ), and a computational method g 1 ; and the discharging station look up table comprises the threshold value (V 0m ), the electrical quantity (A 0i ), and a computational method g 2 , wherein building the charging station look up table comprises:
detecting the electrical quantity (A 0i ) at a moment (t) and touching the capacitive touch panel at the moment (t) to obtain a sensing signal (V 0i ) of a touch point, wherein the sensing signal (V 0i ) is set greater than a threshold value (V 0m );
detecting an electrical quantity (A 1i ) at a next moment (t+1), and touching the capacitive touch panel at the next moment (t+1), to obtain a sensing signal (V 1i ) of the touch point, wherein the sensing signal (V 1i ) is set greater than a threshold value (V 1m ), the electrical quantity (A 1i ) at the moment (t+1) is greater than the electrical quantity (A 0i ) at the moment (t), and V 0i −V 0m =V 1i −V 1m ; and
building an equation f 1 meeting a condition f 1 (V 0i , A 0i ,A 1i )=V 1i , and building an equation f 2 meeting a condition f 2 (V 0m V 1i ,V 0i )=V 1m , to obtain the computational method g 1 , wherein an electrical quantity of a moment (t+n) is defined as A ni , threshold value at the moment (t+n) as V nm , the computational method g 1 meets the conditions: g 1 (V 0m A 0i , A ni )=V nm ;
detecting a current electrical quantity;
determining whether the capacitive touch panel is charging; and
adjusting the threshold value (V 0m ), according to the current electrical quantity, the state of charging or discharging, and the computational method g 1 or g 2 .
2. The method of claim 1 , wherein the equation f 1 is represented by
L
0
i
×
V
0
i
×
A
1
i
A
0
i
=
V
1
i
,
L 0i is a coefficient of
V
0
i
×
A
1
i
A
0
i
for converting into V 1i ; the equation f 2 is represented by
K
0
i
×
V
0
m
×
V
1
i
V
0
i
=
V
1
m
,
and K 0i is a coefficient of
V
0
m
×
V
1
i
V
0
i
for converting into V 1m .
3. The method of claim 1 , wherein the computational method g 1 (V 0m , A 0i , A ni ) meets a condition
L
0
i
×
K
0
i
×
V
0
m
×
A
ni
A
0
i
=
V
n
m
.
4. The method of claim 1 , wherein building the discharging station look up table comprises:
detecting the electrical quantity (A 0i ) at the moment (t), and touching the capacitive touch panel at the moment (t), to obtain the sensing signal (V 0i ) of a touch point, wherein the sensing signal (V 0i ) is set greater than the threshold value (V 0m );
detecting an electrical quantity (A 1i ′) at the next moment (t+1), and touching the capacitive touch panel at the next moment (t+1), to obtain a sensing signal (V 1i ′) of the touch point, wherein the sensing signal (V 1i ′) is set greater than a threshold value (V 1m ′), the electrical quantity (A 0i ) at the moment (t) is greater than the electrical quantity (A 1i ′) at the moment (t+1), and V 0i −V 0m =V 1i ′−V 1m ′; and
building an equation f 1 ′and an equation f 2 ′, the equation meeting a condition: f 1 ′, (V 0i , A 0i , A 1i ′)=V 1i ′, the equation f 2 ′meeting a condition f 2 ′(V 0m , V 1i ′, V 0i )=V 1m ′, wherein an electrical quantity at a moment (t+n) is defined as A ni ′, a threshold value at the moment (t+n) is defined as V nm ′, and the computational method g 2 meets a conditions: g 2 (V 0m , A 0i , A ni ′)=V nm ′.
5. The method of claim 4 , wherein the equation f 1 ′ is represented by
M
0
i
×
V
0
i
×
A
1
i
′
A
0
i
=
V
1
i
′
,
M 0i is a coefficient of
V
0
i
×
A
1
i
′
A
0
i
for converting into V 1i ′; the equation f 2 ′ is represented by
N
0
i
×
V
0
m
×
V
1
i
′
V
0
i
=
V
1
m
′
,
and N 0i , is a coefficient of
V
0
m
×
V
1
i
′
V
0
i
for converting into V 1m ′.
6. The method of claim 4 , wherein the computational method g 2 meets a condition
M
0
i
×
N
0
i
×
V
0
m
×
A
ni
′
A
0
i
=
V
n
m
′
.
7. The method of claim 1 , wherein the threshold value and the sensing signal are voltage values or capacitance values.
8. The method of claim 1 , wherein the capacitive touch panel comprises a transparent conductive layer, and the transparent conductive layer is a carbon nanotube layer, a conductive indium tin oxide layer, or a conductive antimony tin oxide layer.